Charger Doublepow DP-U03

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This is a very simple NiMH charger for AA and AAA cells with 3 slots.

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I got the charger in a cardboard box without any accessories.

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The charger plugs directly into a usb socket

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The user interface is 3 leds that is on when it is charging, i.e. when powered and there is a battery in the slot,

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Specifications are listed on the back.

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The charger uses the typical two level slots for NiMH AA/AAA batteries.

supportedBatteryTypes

supportedBatterySizes

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Measurements charger

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The charger is very slow and it do not terminate or indicate when the batteries is full.

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The two other slots looks similar.

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The current is the same for a AAA battery.

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And it stays the same when charging 3 batteries, but the power consumption from usb goes up. It is still very low at 0.3A

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The charging is controlled by a series resistor and current only depends on battery voltage.



Conclusion

This is a very simple and slow charger without termination and if used regularly it will wear down good batteries.
This type of charger can be useful to get a little extra life from old worn batteries.

I will rate it usable.



Notes

The charger was supplied by fasttech.com for review (SKU: 8766600)

Here is an explanation on how I did the above charge curves: How do I test a charger
Charge selection table