The Soshine T2 serves me well for some months now already. As I built a low side shunt voltage and current logger, I wanted to take a closer look at the charger again.
Some chargers have problems when there is additional resistance between the battery and ground, even if it's only 0.03 Ohms. But from the results I got, the Soshine T2 seems to work properly even with this data logger in place.
The Soshine T2 shows some remarkable behaviour: It charges for roundabout 14 seconds, then switches off for 3 seconds - this seems to be a mechanism to measure battery voltage without load. This leads to a prolongued charging cycle, though.
|Update 13.07.2015: Soshine T2 LiIon charging plot|
What I deem problematic is that the charger doesn't really end the charging cycle even when it shows "FULL" on the display. After the charging ends, with different equipment I can see small current spikes. The voltage didn't rise anymore even when I left the battery in place for more than half an hour, even contrary, the voltage dropped as the cell discharged a few mV after charge end as usual. These spikes seem just to be very short and without real energy to detect if a battery is inserted.
So for rare occasions / not everyday usage the Soshine T2 is useable, but users should remember to take out the batteries after charging ends with a "FULL" display. It is not the best charger, but still ok. Especially considering that it can handle not only LiIon and LiFePos, but also NiMHs batteries (which is what I use it for).
|Update 13.07.2015: Soshine T2 NiMH charging plot|
Also the NiMH charging is working correctly as you can see in the NiMH charge cycle plot to the left. The -dV charge termination detection can be clearly seen - and that there is some trickle charging, contrary to what happens in the LiIon charge program.
Another charging graph with even improved measurement and setup: