21700 Adapter Module for 8-Channel Lithium Battery Tester (4-Slot Base) 80A BMS Upgrade your testing setup with

Upgrade your testing setup with the FNIRSI HRM-10 Premium Kit – a professional-grade internal resistance and voltage tester built for serious DIYers

JBD Smart BMS SP14S004 is a software protection board scheme specially designed for 7~14 series lithium battery packs

Material: T2 pure copper

optional CANbus/UART PCB Material & Size FR‑4

or backup system

21700 Adapter Module for 8-Channel Lithium Battery Tester (4-Slot Base) 80A BMS Upgrade your testing setup withUpgrade 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