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9V NiMH battery trickle charger
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- Printables
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- Electronics
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Trickle charging 9V NiMH for longer times is not recommended.
In my example, I have an input USB-C → switch → boost module → resistor → led → battery slot. Voltage and resistance is set for optimal (lower) current during charging and very low at the end.
All parts were prinded from black ABS, two heat inserts were installed. Countersink M3 bolts (lenght from 10 to 18 mm) were used in order to secure parts together. (In assembly picture is older version of print)
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type of used USB-C connector (AliExpress)