21700 Adapter Module for 8-Channel Lithium Battery Tester (4-Slot Base) AWithZ P90C Battery welding can build 18650/21700/26650/326650

Battery welding can build 18650/21700/26650/326650 battery packs

can be flipped

Important DIY Notice:

battery packs

21700 Adapter Module for 8-Channel Lithium Battery Tester (4-Slot Base) AWithZ P90C Battery welding can build 18650/21700/26650/326650Upgrade your 8 Channel Lithium Battery Tester to support 21700 cells with this dedicated 4 slot adapter module. This expansion base allows your native 18650 tester to properly fit and test 21700 lithium ion cells. The module replaces the standard 18650 holders and provides the correct spacing and mechanical support required for accurate and stable testing of 21700 batteries. ImportantEach module supports 4 cells only. To fully convert an 8 channel