AOT-MSK-330P is a manual tab spot welding machine. Suitable for (Alkaline, NiMH, NiCd, Li-Ion/Li-MnNi, LifePO4, NMC), etc., with more reliable and consistent welding.For AA/AAA/C/D/F/M/10440/14430/14500/14650/17500/18650/26650/38120/40160 size batteries.