I ended up getting one of these things and it appears to be broken.
For some reason, though it passes charging current through just fine, the UPS/battery power does not work. Once power fails on the input, output power fails too.
The weird thing:
Input voltage: 5.0V
Battery voltage: 4.1 V
output voltage: 5.3V
This should be a real simple device: a li-ion charger and a boost SMPS. The voltages would imply that both sections are working but nevertheless it flops flat when unplugged from a power source. The battery seems to be in good shape by itself.
Unfortunately the parts on this are the typical SMT... any clues on datasheets?
For some reason, though it passes charging current through just fine, the UPS/battery power does not work. Once power fails on the input, output power fails too.
The weird thing:
Input voltage: 5.0V
Battery voltage: 4.1 V
output voltage: 5.3V
This should be a real simple device: a li-ion charger and a boost SMPS. The voltages would imply that both sections are working but nevertheless it flops flat when unplugged from a power source. The battery seems to be in good shape by itself.
Unfortunately the parts on this are the typical SMT... any clues on datasheets?
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