9 Volt Battery Chargers
Test Results
| A | B | C | D | E | |
| Type | Nicad | Akaline | Ni-MH | Akaline | Nicad |
| Capacity mAh | 100 | ? | 120 | ? | 120 |
| Start Voltage | 7.61 | 4.25 | 2.45 | 6.81 | 7.06 |
| 1 Resistor mA | 7.2 | 11.4 | .1 | 11.2 | 9.7 |
| 2LED+NPN mA | 10.8 | 10.8 | .1 | 10.8 | 10.8 |
| 2NPN 15V Supply | 10.05 | 11.32 | .1 | 11.32 | 11.31 |
| 2NPN 19V Supply | 11.42 | 11.43 | .1 | 11.44 | 11.43 |
Comments
- '1 Resistor Only' charging currents vary by as much as 58%. It is not reliable. It is dangerous with short circuit.
- 'A' and 'E' were claimed to be new but were actually worn out.
- Battery 'C' is defective or was damaged by a charger that did not speak Ni-MH
- 'B' and 'D' were broken internally, probably during shipping at -40C.
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Charge Rate
Wall Warts
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Test Results
741C Cheat Sheet
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