Free space assessment anywhere in Middle Tennessee 10 years in construction — I frame the room, not just hang the screen Licensed & insured · Cornerstone Golf TN, LLC Hablo Español — llámame y lo hablamos Simulators · Home theaters · Putting greens · Build-outs
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Carl's portable power bank for golf launch monitors
by Carl's Place

Carl's Portable Power Bank, 20,000mAh

$49.95
  • Authorized dealer. New stock through the manufacturer's distributor with full warranty — not a grey-market marketplace listing.
  • Questions before you buy? Call or text (931) 278-5630. You get me, not a call center.

For hitting outdoors, or a bay without an outlet where you need one.

Portable launch monitors have respectable battery life right up until the session you actually care about. This is the answer for range trips, backyard sessions and any bay where the nearest outlet is on the wrong wall.

20,000mAh

Several full charges for a launch monitor, or a launch monitor plus the phone or tablet running it, which is usually the real drain.

USB-A and USB-C, 15W in and out

Charges the monitor and your phone at the same time, and recharges itself over USB-C.

Powers

FlightScope Mevo Plus, Full Swing KIT, Garmin R10, SkyTrak Plus, plus Apple, Samsung and Google devices.

Pocketable

3.25 x 6.5 x 1 inches, about a pound. Lives in the bag rather than on the shelf at home where it does you no good.

If you are building a portable or rental setup, buy two. One always ends up uncharged.

Description

For hitting outdoors, or a bay without an outlet where you need one.

Portable launch monitors have respectable battery life right up until the session you actually care about. This is the answer for range trips, backyard sessions and any bay where the nearest outlet is on the wrong wall.

20,000mAh

Several full charges for a launch monitor, or a launch monitor plus the phone or tablet running it, which is usually the real drain.

USB-A and USB-C, 15W in and out

Charges the monitor and your phone at the same time, and recharges itself over USB-C.

Powers

FlightScope Mevo Plus, Full Swing KIT, Garmin R10, SkyTrak Plus, plus Apple, Samsung and Google devices.

Pocketable

3.25 x 6.5 x 1 inches, about a pound. Lives in the bag rather than on the shelf at home where it does you no good.

If you are building a portable or rental setup, buy two. One always ends up uncharged.

Shipping & Returns

Customer Service Policies


We put care into everything we make and everything we ship. These policies exist so you know exactly what to expect if something comes up.

Ideally, you only need the shipping section. But we wrote the cancellations and returns parts down just in case.

Small truck

Shipping Policy

Carl's Place offers free, no-rush shipping on most orders delivered within the contiguous United States.

  • Paid shipping options are available if you want your item to arrive faster, if you need delivery outside of the contiguous United States, or if your items do not qualify for free, no-rush shipping, ie. freight deliveries.
  • Lead times may vary throughout the season. Handmade items like golf enclosures and custom screens may require extra production time. The expected arrival date of your selected items and shipping cost, if any, will populate during checkout.
  • The delivery date is our good faith estimate based on current lead times and the information we receive from the carriers. Carriers, however, may experience delays that are out of our control. Please use your tracking number to track the status of your package.
  • Some high-dollar items may need a signature at delivery to ensure they reach you safely.
International Shipping

International shipping options are calculated at checkout and cover the cost of shipping only. Any duties, taxes, brokerage, or other import fees (including clearance service charges in some cases) are the responsibility of the recipient.

Shipments that are discarded or returned due to nonpayment of delivery fees are not eligible for refund. The delivery timelines provided during checkout are estimates and do not account for delays caused by customs or brokerage processes.

Using our electronics in countries we can't ship to may lead to extra fees due to region locks. Be sure to check with the manufacturer for more details.

Asset 31

Manufacturer Direct Items

At Carl's Place, get top-quality indoor golf items shipped conveniently and quickly, directly from the manufacturer.

  • Which products are Manufacturer Direct Items?: Items that come direct from the manufacturer are indicated as such on the product page.
  • Expedited Shipping: Items marked Manufacturer Direct come straight from the manufacturer and cannot be expedited.
  • Separate Shipments: Orders with both Manufacturer Direct and in-stock items will arrive in separate shipments.
  • Delivery Fees: Some Manufacturer Direct Items ship from outside the US and may result in additional delivery fees. Any duties, taxes, brokerage, or other import fees (including clearance service charges in some cases) are the responsibility of the recipient.
  • Cancellations & Returns: If Manufacturer Direct Item(s) can be canceled, a 5% cancellation fee will be applied. With the exception of Skytrak, Manufacturer Direct Items are subject to a 15% restocking fee. Return policies vary by the manufacturer, see more info in Product-Specific Return Policies.

BoxOrder Changes & Cancellations

Our hardworking team is up pretty early to get working on your orders. Often before our lovely customer service crew has had their coffee. We try to catch any order changes or cancellations before they get too far, but in case we have spent time getting your order ready, we do reserve the right to charge a restocking fee.

If you need to change or cancel your order, please contact us as soon as possible.

  • Custom Items: Carl's Place may be unable to honor change or cancelation requests on custom items if submitted more than 24 hours after order placement. Honored requests will be assessed a restocking fee: Orders with a product with custom dimensions will be assessed a restocking fee of up to 30%. Orders with a product with multiple finishing techniques, unique alternative finishing styles, or untraditional dimensions will be assessed a restocking fee of up to 50%.
    • ***Not all custom items are eligible for returns. See 'Custom Products' in the Returns Policy section for information.
  • Manufacturer Direct Items: Items that come direct from the manufacturer are indicated as such on the product page. Manufacturer Direct items have a 5% cancellation fee. If we are unable to cancel your order, your items will be subject to the Returns Policy below.

returns icon

Returns Policy

Carl's Place has a 30-day return policy on most items.

Some items are not returnable.
Some items are only returnable if unopened.
Some items follow a different timeline.

Please thoroughly inspect your items upon delivery. If something’s wrong or you're thinking about returning it, you must contact us first. All returns must be approved before sending anything back.

  • Returns Inspection: All returns are expected to arrive in new and unused condition and items are thoroughly inspected before exchanges or refunds are granted. If an item is received in a condition other than new and unused and is deemed to be suitable for discounted resale, as determined by Carl's Place, a 30% restocking fee will be applied. Based on the return inspection, not all returned items will qualify for a refund.
  • Return Shipping: Return shipping charges are the responsibility of the sender.
  • Manufacturer Direct Items: Items that come direct from the manufacturer are indicated as such on the product page. Return policies vary by the manufacturer, see more info in Product-Specific Return Policies.

Product-Specific Return Policies:

Apparel

Carl's Place apparel in like-new condition is eligible for return or exchange for 15 days from the date of delivery. Apparel must be unused, unaltered, and free of stains, odor, and debris. If it is determined that the return is not in acceptable condition, you will be notified and given the opportunity to have the items returned to you at your cost.

Clearance Products

Clearance items and remnants are sold as-is and are not eligible for return.

Custom Products

We love to work on customized projects and help our customers create their perfect setup, however, not all custom products are eligible for return.  Those include:

  • Custom/Non-Standard Finish: These are products that incorporate multiple finishing techniques or unique alternative finishing styles.
  • Custom-Sized Replacement Components: Replacement components made to fit an existing product that is not a standard size found on the product listing page.
  • Untraditional Dimensions: Impact screens and enclosures that do not fall within the range of dimensions offered in our Build Your Own Golf Simulator tool. 
Electronics

Open Box Items may be a restocking fee of up to 20%. Using our electronics in countries we can't ship to may lead to extra fees due to region locks. Be sure to check with the manufacturer for more details.
Some of the electronics we sell are Manufacturer Direct Items. See special terms and information in the Manufacturer Direct Items section.

  • Appotronics: All sales are final. You may request a return for Appotronics items within 15 days of delivery if the equipment arrived damaged or defective.
  • BenQ: We accept returns on BenQ items in like-new condition and original packaging within 30 days.
  • Bushnell: Returns are accepted on Bushnell Items returned in Like New condition with all original packaging within 30-days of the original ship date. Returns may be subject to a 20% restocking fee. 
  • Epson. You may request a return for Epson items within 15 days of delivery if the equipment arrived damaged or defective.
  • FlightScope: We accept returns on FlightScope items in like-new condition with all original packaging within 30 days of delivery.
  • Foresight Sports: All sales are final. You may submit a warranty claim to Foresight Sports if the equipment arrived damaged or defective. 
  • Full Swing: We accept returns on Full Swing items in like-new condition with all original packaging within 30 days of delivery.
  • Garmin: We accept returns on Garmin items in like-new condition with all original packaging within 30 days of delivery.
  • GolfIn: Returns are accepted on unopened Golfin products in like-new condition for up to 30 days after the date of purchase.
  • GolfJoy: Returns are accepted on GolfJoy products in like new condition with all original components for up to 30 days from delivery. Submit a return request to receive an RMA before shipping anything back. Customers are responsible for return shipping costs.
  • LG: All sales are final. You may request a return for LG items within 15 days of delivery if the equipment arrived damaged or defective.
  • NVISAGE: We accept returns on NVISAGE items in like-new condition with all original packaging within 30 days of delivery.
  • Optoma: We accept returns on Optoma items in like-new condition and original packaging within 30 days.
  • Panasonic: We accept returns on Panasonic items in like-new condition and original packaging within 30 days
  • ProTee: All sales are final. You may submit a warranty claim to ProTee United if the equipment arrived damaged or defective.
  • Rapsodo: We accept returns on Rapsodo items in like-new condition and original packaging within 30 days.
  • SkyTrak: We accept returns on SkyTrak items in like-new condition with all original packaging within 30 days of delivery.
  • SurfThing: Returns are accepted on unopened SurfThing products in like new condition for up to 30 days after purchase.
  • Trackman: Defective or non-conforming products can be returned for a refund of the purchase price and shipping costs. Customers have a right of withdrawal within 30 calendar days of delivery for software and physical products, without giving a reason. Products must be returned complete and not used, and customers are responsible for return shipping costs. Refunds will be processed within 30 days of receiving the returned products and may be withheld until the products are received or evidence of return is provided.
  • TruGolf: We accept returns on TruGolf items in like-new condition with all original packaging within 14 days of delivery.
  • Uneekor: We accept returns on Uneekor items in like-new condition with all original packaging within 15 days of license activation or 60 days of receipt.
Gift Cards
Gift cards are not returnable. See our Gift Card Policy for full details.
Hitting Mats & Turf

Some of these items are Manufacturer Direct Items. See special terms and information in the Manufacturer Direct Items section.

  • Big Moss: We accept returns on Big Moss items in like-new condition within 30 days of delivery.
  • Country Club Elite: We accept returns on Country Club Elite items in like-new condition within 90 days of delivery.
  • Fiberbuilt: We accept returns on Fiberbuilt items in like-new condition with all original packaging within 30 days of delivery.
  • TrueStrike: We accept returns on TrueStrike items in like-new condition with all original packaging within 30 days of delivery.
Software & Digital Goods

Golf simulator software and digitally-delivered product sales are final. We are unable to accept returns on any digital downloads.

Services

Design Services: Design Services are non-refundable once we begin work on your project, which starts upon your response to the initial consultation email; OR if we do not receive a response within 60 days of your order. You are responsible for keeping your contact information up to date and responding to our communications promptly.

Speech bubblesProduct Support

We're happy to help with product questions!

Please reach out to our Customer Service team with any questions about your screens, enclosures, any Carl's Place product, or your general setup.

For any third-party product issues or warranty inquiries, please refer to the manufacturer.

Dollar billRefunds

If your return is eligible for a refund, you can expect your refund to be processed within 10 business days of the receipt of the return. Refunds are issued back to the original form of payment.

Calculator

Tax

Tax will be automatically calculated in the shopping cart. To exempt a customer from sales tax we must have a current Sales and Use Tax Certificate of Exempt Status (CES) form, or in the case of wholesale purchases, a state-issued Resale Certificate, prior to purchase.

Thanks for choosing Cornerstone Golf. I'm one person who loves this stuff and wants to help you do it right — whether you build it yourself or have me install it here in Middle Tennessee. Every product I carry is chosen because it works, and if you're ever unsure, just reach out. I'd rather help you find what fits than sell you what doesn't. Let's talk.

Why buy it here

A real person on the other end.

You get me, not a call center

One phone number, and I answer it. Ask me whether this actually works with your setup before you order it.

Authorized dealer, real warranty

New stock through the manufacturer with full support. Not a marketplace listing from who-knows-where.

I use this stuff myself

I build simulator rooms for a living, so if something in here is a waste of money for your setup, I'll say so.

Description

For hitting outdoors, or a bay without an outlet where you need one.

Portable launch monitors have respectable battery life right up until the session you actually care about. This is the answer for range trips, backyard sessions and any bay where the nearest outlet is on the wrong wall.

20,000mAh

Several full charges for a launch monitor, or a launch monitor plus the phone or tablet running it, which is usually the real drain.

USB-A and USB-C, 15W in and out

Charges the monitor and your phone at the same time, and recharges itself over USB-C.

Powers

FlightScope Mevo Plus, Full Swing KIT, Garmin R10, SkyTrak Plus, plus Apple, Samsung and Google devices.

Pocketable

3.25 x 6.5 x 1 inches, about a pound. Lives in the bag rather than on the shelf at home where it does you no good.

If you are building a portable or rental setup, buy two. One always ends up uncharged.

Shipping & Returns

Customer Service Policies


We put care into everything we make and everything we ship. These policies exist so you know exactly what to expect if something comes up.

Ideally, you only need the shipping section. But we wrote the cancellations and returns parts down just in case.

Small truck

Shipping Policy

Carl's Place offers free, no-rush shipping on most orders delivered within the contiguous United States.

  • Paid shipping options are available if you want your item to arrive faster, if you need delivery outside of the contiguous United States, or if your items do not qualify for free, no-rush shipping, ie. freight deliveries.
  • Lead times may vary throughout the season. Handmade items like golf enclosures and custom screens may require extra production time. The expected arrival date of your selected items and shipping cost, if any, will populate during checkout.
  • The delivery date is our good faith estimate based on current lead times and the information we receive from the carriers. Carriers, however, may experience delays that are out of our control. Please use your tracking number to track the status of your package.
  • Some high-dollar items may need a signature at delivery to ensure they reach you safely.
International Shipping

International shipping options are calculated at checkout and cover the cost of shipping only. Any duties, taxes, brokerage, or other import fees (including clearance service charges in some cases) are the responsibility of the recipient.

Shipments that are discarded or returned due to nonpayment of delivery fees are not eligible for refund. The delivery timelines provided during checkout are estimates and do not account for delays caused by customs or brokerage processes.

Using our electronics in countries we can't ship to may lead to extra fees due to region locks. Be sure to check with the manufacturer for more details.

Asset 31

Manufacturer Direct Items

At Carl's Place, get top-quality indoor golf items shipped conveniently and quickly, directly from the manufacturer.

  • Which products are Manufacturer Direct Items?: Items that come direct from the manufacturer are indicated as such on the product page.
  • Expedited Shipping: Items marked Manufacturer Direct come straight from the manufacturer and cannot be expedited.
  • Separate Shipments: Orders with both Manufacturer Direct and in-stock items will arrive in separate shipments.
  • Delivery Fees: Some Manufacturer Direct Items ship from outside the US and may result in additional delivery fees. Any duties, taxes, brokerage, or other import fees (including clearance service charges in some cases) are the responsibility of the recipient.
  • Cancellations & Returns: If Manufacturer Direct Item(s) can be canceled, a 5% cancellation fee will be applied. With the exception of Skytrak, Manufacturer Direct Items are subject to a 15% restocking fee. Return policies vary by the manufacturer, see more info in Product-Specific Return Policies.

BoxOrder Changes & Cancellations

Our hardworking team is up pretty early to get working on your orders. Often before our lovely customer service crew has had their coffee. We try to catch any order changes or cancellations before they get too far, but in case we have spent time getting your order ready, we do reserve the right to charge a restocking fee.

If you need to change or cancel your order, please contact us as soon as possible.

  • Custom Items: Carl's Place may be unable to honor change or cancelation requests on custom items if submitted more than 24 hours after order placement. Honored requests will be assessed a restocking fee: Orders with a product with custom dimensions will be assessed a restocking fee of up to 30%. Orders with a product with multiple finishing techniques, unique alternative finishing styles, or untraditional dimensions will be assessed a restocking fee of up to 50%.
    • ***Not all custom items are eligible for returns. See 'Custom Products' in the Returns Policy section for information.
  • Manufacturer Direct Items: Items that come direct from the manufacturer are indicated as such on the product page. Manufacturer Direct items have a 5% cancellation fee. If we are unable to cancel your order, your items will be subject to the Returns Policy below.

returns icon

Returns Policy

Carl's Place has a 30-day return policy on most items.

Some items are not returnable.
Some items are only returnable if unopened.
Some items follow a different timeline.

Please thoroughly inspect your items upon delivery. If something’s wrong or you're thinking about returning it, you must contact us first. All returns must be approved before sending anything back.

  • Returns Inspection: All returns are expected to arrive in new and unused condition and items are thoroughly inspected before exchanges or refunds are granted. If an item is received in a condition other than new and unused and is deemed to be suitable for discounted resale, as determined by Carl's Place, a 30% restocking fee will be applied. Based on the return inspection, not all returned items will qualify for a refund.
  • Return Shipping: Return shipping charges are the responsibility of the sender.
  • Manufacturer Direct Items: Items that come direct from the manufacturer are indicated as such on the product page. Return policies vary by the manufacturer, see more info in Product-Specific Return Policies.

Product-Specific Return Policies:

Apparel

Carl's Place apparel in like-new condition is eligible for return or exchange for 15 days from the date of delivery. Apparel must be unused, unaltered, and free of stains, odor, and debris. If it is determined that the return is not in acceptable condition, you will be notified and given the opportunity to have the items returned to you at your cost.

Clearance Products

Clearance items and remnants are sold as-is and are not eligible for return.

Custom Products

We love to work on customized projects and help our customers create their perfect setup, however, not all custom products are eligible for return.  Those include:

  • Custom/Non-Standard Finish: These are products that incorporate multiple finishing techniques or unique alternative finishing styles.
  • Custom-Sized Replacement Components: Replacement components made to fit an existing product that is not a standard size found on the product listing page.
  • Untraditional Dimensions: Impact screens and enclosures that do not fall within the range of dimensions offered in our Build Your Own Golf Simulator tool. 
Electronics

Open Box Items may be a restocking fee of up to 20%. Using our electronics in countries we can't ship to may lead to extra fees due to region locks. Be sure to check with the manufacturer for more details.
Some of the electronics we sell are Manufacturer Direct Items. See special terms and information in the Manufacturer Direct Items section.

  • Appotronics: All sales are final. You may request a return for Appotronics items within 15 days of delivery if the equipment arrived damaged or defective.
  • BenQ: We accept returns on BenQ items in like-new condition and original packaging within 30 days.
  • Bushnell: Returns are accepted on Bushnell Items returned in Like New condition with all original packaging within 30-days of the original ship date. Returns may be subject to a 20% restocking fee. 
  • Epson. You may request a return for Epson items within 15 days of delivery if the equipment arrived damaged or defective.
  • FlightScope: We accept returns on FlightScope items in like-new condition with all original packaging within 30 days of delivery.
  • Foresight Sports: All sales are final. You may submit a warranty claim to Foresight Sports if the equipment arrived damaged or defective. 
  • Full Swing: We accept returns on Full Swing items in like-new condition with all original packaging within 30 days of delivery.
  • Garmin: We accept returns on Garmin items in like-new condition with all original packaging within 30 days of delivery.
  • GolfIn: Returns are accepted on unopened Golfin products in like-new condition for up to 30 days after the date of purchase.
  • GolfJoy: Returns are accepted on GolfJoy products in like new condition with all original components for up to 30 days from delivery. Submit a return request to receive an RMA before shipping anything back. Customers are responsible for return shipping costs.
  • LG: All sales are final. You may request a return for LG items within 15 days of delivery if the equipment arrived damaged or defective.
  • NVISAGE: We accept returns on NVISAGE items in like-new condition with all original packaging within 30 days of delivery.
  • Optoma: We accept returns on Optoma items in like-new condition and original packaging within 30 days.
  • Panasonic: We accept returns on Panasonic items in like-new condition and original packaging within 30 days
  • ProTee: All sales are final. You may submit a warranty claim to ProTee United if the equipment arrived damaged or defective.
  • Rapsodo: We accept returns on Rapsodo items in like-new condition and original packaging within 30 days.
  • SkyTrak: We accept returns on SkyTrak items in like-new condition with all original packaging within 30 days of delivery.
  • SurfThing: Returns are accepted on unopened SurfThing products in like new condition for up to 30 days after purchase.
  • Trackman: Defective or non-conforming products can be returned for a refund of the purchase price and shipping costs. Customers have a right of withdrawal within 30 calendar days of delivery for software and physical products, without giving a reason. Products must be returned complete and not used, and customers are responsible for return shipping costs. Refunds will be processed within 30 days of receiving the returned products and may be withheld until the products are received or evidence of return is provided.
  • TruGolf: We accept returns on TruGolf items in like-new condition with all original packaging within 14 days of delivery.
  • Uneekor: We accept returns on Uneekor items in like-new condition with all original packaging within 15 days of license activation or 60 days of receipt.
Gift Cards
Gift cards are not returnable. See our Gift Card Policy for full details.
Hitting Mats & Turf

Some of these items are Manufacturer Direct Items. See special terms and information in the Manufacturer Direct Items section.

  • Big Moss: We accept returns on Big Moss items in like-new condition within 30 days of delivery.
  • Country Club Elite: We accept returns on Country Club Elite items in like-new condition within 90 days of delivery.
  • Fiberbuilt: We accept returns on Fiberbuilt items in like-new condition with all original packaging within 30 days of delivery.
  • TrueStrike: We accept returns on TrueStrike items in like-new condition with all original packaging within 30 days of delivery.
Software & Digital Goods

Golf simulator software and digitally-delivered product sales are final. We are unable to accept returns on any digital downloads.

Services

Design Services: Design Services are non-refundable once we begin work on your project, which starts upon your response to the initial consultation email; OR if we do not receive a response within 60 days of your order. You are responsible for keeping your contact information up to date and responding to our communications promptly.

Speech bubblesProduct Support

We're happy to help with product questions!

Please reach out to our Customer Service team with any questions about your screens, enclosures, any Carl's Place product, or your general setup.

For any third-party product issues or warranty inquiries, please refer to the manufacturer.

Dollar billRefunds

If your return is eligible for a refund, you can expect your refund to be processed within 10 business days of the receipt of the return. Refunds are issued back to the original form of payment.

Calculator

Tax

Tax will be automatically calculated in the shopping cart. To exempt a customer from sales tax we must have a current Sales and Use Tax Certificate of Exempt Status (CES) form, or in the case of wholesale purchases, a state-issued Resale Certificate, prior to purchase.

Thanks for choosing Cornerstone Golf. I'm one person who loves this stuff and wants to help you do it right — whether you build it yourself or have me install it here in Middle Tennessee. Every product I carry is chosen because it works, and if you're ever unsure, just reach out. I'd rather help you find what fits than sell you what doesn't. Let's talk.