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Andyg 2019-11-13 21:09:56
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Andyg The Negative ( -) end of the first cell is connected to the PCB terminal marked B- The connections between the (+) positive end of the first cell and the (-) Negative end of the second cell is connected to the PCB terminal marked BM (battery middle?) The (+) Positive end of the second cell is connected to the PCB terminal marked B+ The connection to the load / charge is made to the terminals marked P+ (7.5V nominal) and P- (GND Negative) Operation is simple. If either of the 2 series cells exceeds the upper voltage limit or drops below the lower voltage limit, the load / charge connection disconnects. The load / charge connection reconnects when the voltages are normal again. This may be the basis of a simple charge limiting circuit and over discharge protection circuit. For charging the voltage of the power source is not as important as the current. The voltage should be a bit over the maximum of the batteries, and the current available must be suitable for the battery used (see battery charge specs). The charge routine will be basic but OK, cutting in and out at the appropriate voltages for the lithium cells.

2019-11-13 08:59:20 (0)
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Andyg 2019-11-13 19:51:01
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Andyg 2019-11-13 19:54:17
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