The Hohm School Battery Charger by Hohm Tech is a fully automated and is equipped with the BLD1 system which automates the step up/down output so both small and larger cells charge at the proper rate. Even li-ion batteries with or without PCB/PCM3 are easily balanced to the correct voltage. This ensures today's small li-ion batteries chemistry integrity is not compromised, allowing them to get a full life cycle.

2Bay Features:

BLD1 System Automates charge amplification & reduction on li-ion cells0V2 Activation among lowest Volt Recognition points ever to ensure low charge cells get back to where they ought to be (4.2V)Input-Power Autonomous Regulator integration (no more stressing USB power adapters or ports)Compatible with ALL li-ion cells from as short as 30mm to as long as 71mmLED indicator that reports color and blink variation for quick/easy readout PCB/PCM3 compatible so even protected cells arent left out in the cold Protection 101: A] over charge; B] short-circuit; C] wrong battery type detection D] reverse polarity

4Bay Features:

BLD1 System Automates charge amplification & reduction on li-ion cells Input-Power Autonomous Regulator integration (no more stressing USB power adapters or ports)Compatible with ALL li-ion cells from as short as 30mm to as long as 73mmLED indicator that reports color and blink variation for quick/easy readout PCB/PCM3 compatible so even protected cells arent left out in the cold Protection 101: A] over charge; B] short-circuit; C] wrong battery type detection; D] reverse polarity