Is my Lacrosse BC-900 dead?

fefrie said:

Had it for 10 or so years.

Lately, it just misses the termination voltage and just continues to charge straight to 3.7a. Doesn't matter if it's aaa or aa.

Tried 200, 500, 700, misses them all the time.

Granted, the cells are a bit older, but not completely worn out. However, in earlier days, with defective cells the charger was still able to find termination voltages and end at a predicted lower capacity.

Is there a way to 'reboot' this charger or is this a common behavior of chargers that are 'done'.

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dmcbohol said:

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Have you found a solution to this problem?

If not yet & you still have the charger/power supply unit & can solder, open the charger unit (only 4 screws to remove at the back) & look for any cold solder. Another worth inspecting is the thermal grease on the thermal sensor : you have to remove the motherboard (another 4 screws to remove) from the plastic case. You will then see 2 small beads with long legs - this is the thermal sensor; put some thermal grease on it then reinstall & check if your charger is good again.

If you're having a reset/restart problem you can then browse around this forum for the solutions.

I'm very new here but I plan to put up a BC-900 repair & mods thread if the moderator will allow me

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ChrisGarrett said:

I don't see why not? I've had a BC-700 for 6+ years and mine misses terminations sometimes, on new quality batteries; however, it mostly shuts down thermally at 700mA and even 500mA. It's expected, lol.

My Maha C9000 Wizard One, of the same age, has never shut down thermally, nor has it ever missed a termination.

I wish I would have bought two of those.

Chris

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