Hohm Tech School UNO 2A USB Charger
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Discontinued Model – No Restock After Sold Out
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Hohm Tech SCHOOL UNO 2A USB Charger
The Hohm Tech SCHOOL UNO is a high-performance, single-bay smart charger designed for maximum portability and ease of use. Featuring a streamlined, "No-Button" design, it utilizes an internal micro-processor to automatically recognize battery chemistry and adjust charging speeds between 0.5A and 2.0A. Whether you are charging an 18650 or a larger 21700 cell, the SCHOOL UNO ensures a safe, efficient, and fully autonomous experience, making it the perfect travel companion for vapers and tech enthusiasts alike.
Key Features
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Fully Autonomous Charging: No settings required; the device automatically detects the optimal charging speed (0.5A to 2.0A) for your battery.
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Wide Cell Compatibility: Fits all Li-ion cells ranging from 30mm to 71mm in length, including 18650, 20700, 21700, and 26650.
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Low Voltage Activation: Capable of reviving over-discharged batteries that standard chargers might reject.
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Intuitive LED Indicator: Simple color-coded LED provides immediate feedback on battery life and charging status.
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Comprehensive Safety Suite: Built-in PCB overheat protection, short-circuit protection, and reverse polarity protection for total peace of mind.
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Compact & Portable: Measuring only 100mm in length, it easily fits in a pocket or travel bag.
Specification Table
| Attribute | Specification |
|---|---|
|
Dimensions |
100mm x 32mm x 28mm |
|
Slot Count |
Single (1) Independent Bay |
|
Charging Speed |
0.5A - 2.0A (Auto-Adjust) |
|
Input Power |
MicroUSB Port |
|
Supported Chemistry |
All Li-ion Cells (3.6V - 3.7V) |
|
Cell Size Range |
30mm to 71mm |
|
Indicators |
Smart LED Status Light |
|
Construction |
Fire-Retardant ABS Materials |
FAQ
Q: Can the SCHOOL UNO charge 21700 batteries?
A: Yes, it is fully compatible with 21700 and 20700 cells, as well as standard 18650s.
Q: How do I select the 2A fast-charging mode?
A: You don't have to. The Hohm SCHOOL UNO features an intelligent input power regulator that automatically chooses the fastest safe speed for the specific battery you insert.
Q: Is it safe to leave my battery in the charger overnight?
A: Yes, the device features Over-Charge protection that automatically terminates the power flow once the battery reaches its full capacity.
Q: What do I do if the LED doesn't turn on?
A: Ensure you are using the included MicroUSB cable and a reliable 5V power source. If it still won't light up, check the battery orientation (polarity).
