Geebax
Captain
Australia
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Glenn Goodlett Posted at 2-22 20:56
I don't think you fully understand how the smart batteries function in that they do not have a means to limit current. If you charge a battery at 0.2 amps and another battery at similar state of charge at 4.0 amps, the battery charged at 4 amps will complete the charge sequence much faster.
You would be forgiven for not knowing, but I designed the very first processor controlled charger for NiCad batteries so long ago I cannot remember the date. But Yes, I do know about batteries and the DJI batteries DO have a current control circuit, and can charge at a constant current selected by software.
And because the DJI batteries have intelligence on-board, they are able to charge at the optimum rate, and then drop the charge rate down to balance the charge. The processor also knows exactly how much charge is put into the battery and the quantity of charge used, that is how the aircraft knows the state of charge of the battery, since there is no other way of determining that.
For this reason, the DJI 'chargers' are not in fact chargers at all, they are simply power supplies, because all the smarts needed to control the batteries are in the batteries themselves. Therefore, a device that is a smart charger, is a waste of time, since it cannot control the charge to the DJI batteries in any way. The only function it can perform is a controlled discharge, and the DJI batteries have got that covered too.
So a separate charger is something of a chocolate coffee pot.
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