Balancing is done by the bms, and needs the full 46v voltage to do it. That is the same spec as ping i think. My sla chargers put out 44.5 . The charger is just an sla smart charger with the voltage tweaked a few volts higher. I don't think there will be any harm to use a regular sla charger as long as the pack is fairly balanced to start with. The problem for you is that they tend to arrive fairly unbalanced, and take a half dozen or so cycles to wake up the cells so they can take a full charge. So right now is when the 46v charge is needed the most. If you aren't riding because it's 10 degrees out there, just wait for the replacement charger to arrive from cammy. Surely he will send you one soon, or get zinged on the forum some more. If you need to ride now, just charge with an sla charger you can get quicker from a vendor on your continent. The lower voltage charger will balance the pack, it will just take forever. When the green light goes on, there is still a tiny trickle flowing, that is meant to keep a lead battery topped up. So if you use one of those chargers, just leave it charging all the time unless you are actually riding. Very very slowly, the lower cells will come up some. The breaking in period should still be the same, about a half dozen cycles to get the cells to where they will take a full charge. I would just be real conservative about discharging too far untill you get a higher volt charger, and actually, you should be all the time, and rarely ride the battery down to cutoff, except for an occasional test.
So you can just get any 36v scooter or bike charger and do a few cycles to break it in, then with a voltmeter, you could check the cells to see if any are low after a full charging. If they are all pretty close, your pack is balanced and you don't need to worry much about a balancing charger. Soon after I got my ping, I fried my charger and rode for 1000 miles with 44.5v chargers. Since my pack was staying balanced anyway, it did not need balancing for months. Lifepo4 balancing is important, but if you use the battery in a low c rate, it may never get unbalanced in the first place.
Eventually, I opened up my soneil and tweaked it up to 46.5v but it had no discernable effect , since the pack was still balanced and seldom gets out of balance. So now it gets to 46 v hot off the charger, but as soon as you turn a wheel a few rotations, it drops to 44v. So anything above 44v is just surface charge that helps the cells get to full charge. As long as you are getting a balanced 44v into the pack, you have a full charge. Balancers are real important, but only when the battery needs it, and that is seldom with a good pack used properly.
