Rebuild Service for a 3M TR-300 battery pack. For the cost of this service, we will open the battery pack, replace all cells, and reassemble. The performance of our battery packs is equal to that of a brand new battery from the OEM but at a fraction of the cost. Send your TR-300 battery into us and let us make it work as good as new. We have the latest in test equipment to ensure that you receive the highest quality battery pack possible. All of our assembly is done in the USA with American labor. Buy from us and buy with confidence. Our trained technicians work on 3M brand batteries each day. We rebuild all types of 3M brand batteries so if you cannot find the one you need please contact us. Don't wait any longer. Send your TR-300 battery pack into us for repair today!

Note: When we are rebuilding your battery, if your circuit board is found to be defective, we will contact you. At that time we will provide you with the option of sending us another battery or we can refund you for the rebuild service. The old cells are removed and recycled prior to circuit board testing and cannot be shipped back to you. 

Orders containing lithium batteries will ship by ground only regardless of the shipping method chosen.

3M® is a registered trademark. MTO Battery is not affiliated nor endorsed by 3M®.