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Hohm Tech

Hohm School 4A Charger

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BLD System: > + < 62mm
PCB/PCM Compatible: YES
0V Activation: Enabled @ ≥0.5V
USB Input Power Regulator: Automated
Charge Rate: 4A total (0.5A | 1A | 2A per slot)
Battery Size Compatibility: ALL up to 73mm
Compatible Chemistry:  Li-ion (3.6V / 3.7V)


USB-C 4 AMP continuous power supply and stability made it possible for Hohm SCHOOL 4A to do what it does so well.
Thinking outside the box, while keeping simplicity and user-error prevention at the forefront with safety features.  18 months of R&D led us to develop an extremely capable charger that makes other chargers look stupid.  It has a 3-tier amp BLD (battery length detection) System; has a variable input voltage IPR (input power regulator) feature. This ELIMINATES USER ERRORS and keeps them and their li-ion batteries moving forward without delay.  This is simplicity at its best, while not forfeiting usable amperage or precision.
There is no need for a screen on this charger. It is 100% autonomous. It is equipped with our BLD*1 System, which automates the step-up/down output so both small and larger cells charge at the proper rate (0.5A, 1A, 2A per channel with 4A total distribution). Even li-ion batteries with a PCB/PCM*3 are easily balanced to the correct voltage. This ensures today’s small li-ion batteries chemistry integrity is not compromised, allowing them to get the cycle life they deserve.
Applying more forward thinking targeted towards safety & performance, we integrated input voltage regulation. This is safety 101 here. This allows charger to not stress or damage USB adapters no matter the power supplying device. Fact is simple: today’s li-ion batteries need precise voltage and amperage delivery to ensure long reliable performance & life…Say hello to Hohm SCHOOL 4A, the ‘Professor’ of Chargers.
Equipped with:
> BLD*1 System: Battery Length Detection automates charge amplification & reduction on li-ion cells.
> Low Voltage Activation*2: Allows overly discharged li-ion batteries down to 1.95V to be charged via a 200mA stimulate charge.
> 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 73mm
> LED indicator that reports [green/red] color and blink variation for quick/easy readout
> PCB/PCM*3 compatible so even protected cells aren’t left out in the cold
> Protection 101: A] over charge; B] short-circuit; C] wrong battery type detection; D] reverse polarity
Every Hohm Tech product is tested and certified by the rightful authorities/laboratories and accredited entities to achieve Compliance & Certification of: CE, ROHS, FCC, Air/Sea Transport, and is backed by Industry Leading PLI.  We do not cut corners. We deliver what we promise… chart topping performance, capacity, consistency, and safety.
*1 Battery Length Detection
*2 Low Voltage Activation Recognition @ 1.95V
*3 Protection Circuit Board/Module

Hohm Batteries are not included with Charger, shown for display purposes only.

WARNING: Know your battery & charger warning & safety information

Consult a certified lithium ion specialist or certified battery pack assembler if there are any uncertainties or questions on the use of, handling of, installation of, charging of, or storage of lithium ion batteries. Consumer safety is of utmost importance.

Warranty Information

Charger(s) – 365-Day (1 Yr.) Warranty WARRANTY COVERAGE: All warranty claims should be handled directly through Hohm Tech and not the retailer. In the event, a product needs a warranty claim, follow the steps outlined here (“Service Center“). Hohm Tech assumes responsibility for any of its product(s) and will have the product(s) repaired or replaced at Service Center’s sole discretion. For more information please visit: https://hohmtech.com/warranty-center/

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