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I did this little experiment to see what kind of charging rate the Solo battery will accept. Several of us have been working on alternative ways to charge the batteries faster than the pitiful "Solo smart charger" that only does 3.3 amps.
Short version, the answer seems to be 5.9 amps per my testing. At a fraction over 6 amps, the battery's smart circuit cuts off the charging by opening the circuit. A few seconds later, the circuit closes and charging will recommence. But it will again cycle off as soon as the current hits 6.x amps again. The smart circuit is protecting the battery by acting like an automatic self-reclosing circuit breaker.
If you set the recharging power to 5.9 amps or less, it holds steady and recharges without interruption.
If I were a betting man, I would bet there are other protections in there as well. If I was 3DR, I would have a thermal cut-off, and maybe even a time based cut-off as well.
Short version, the answer seems to be 5.9 amps per my testing. At a fraction over 6 amps, the battery's smart circuit cuts off the charging by opening the circuit. A few seconds later, the circuit closes and charging will recommence. But it will again cycle off as soon as the current hits 6.x amps again. The smart circuit is protecting the battery by acting like an automatic self-reclosing circuit breaker.
If you set the recharging power to 5.9 amps or less, it holds steady and recharges without interruption.
If I were a betting man, I would bet there are other protections in there as well. If I was 3DR, I would have a thermal cut-off, and maybe even a time based cut-off as well.
