AGM cells provide low internal resistance for stable output and superior charge acceptance
so the device shows 15% battery remaining and then cuts off moments later
2V confirmed on the charger indicator before resuming normal use
and portable tools that require sealed lead-acid batteries
Why Ni-MH chemistry suits this application
Hitachi BSL 1415 14.4V Replacement Battery 5000mAh Li-ion ThinkPad E590-20NBA00FCD AGM cells provide low internalHitachi DS 14DBL DV 14DBL Series 14. 4V Li ion 5. 0Ah Replacement Battery (BSL 1415) This is a 14. 4V, 5000mAh Li ion replacement battery for the Hitachi DS 14DBL, DV 14DBL, C 14DSL2, C 14DYSL, and 26 additional compatible models. It replaces OEM part numbers BSL 1415, BSL 1430, 329083, 329877, and 329901. The pack slots directly into the same 14. 4V slide rail mount used across this Hitachi cordless platform. DS 14DBL and DV 14DBL platform fit: All