The trick is to match the voltage. The two car batteries must have been fully charged as they were around 26 volts combined. Then they just dump their voltage into the A123s. The long zip wire cuts down the Amps for the transfer to a reasonable 16 amps. I know the small 1100ma A123s can take only about 7amps. A 4 cell A123 pack maxes out at 14.6 volts so it wouldn't quite get charged by one car battery. A 3 cell A123 pack could get overcharged by an auto battery.
You can charge the 2300mah cell up too 4.2volts per, so a 3 cell A123 2300 pack can be charge at 12.6 volts. So yes, you can charge a 3-cell on one auto lead acid battery. Again limiting the current flow by using a zip chord with the length of it cut so the current is max out to 10 amps per "P". We've done a 3 cell A123 pack zip chord directly to a car battery before, so it works.
in the plane whats the set up ?
6s2p or 12sp1?
videocruzer 2 years ago
do you charge like that all the time?
videocruzer 2 years ago
hi i have a question, your zip charging 6s with 24v Power supply. how much voltage would you need to charge 4s a123's? thanks =)
aznifull 2 years ago
The trick is to match the voltage. The two car batteries must have been fully charged as they were around 26 volts combined. Then they just dump their voltage into the A123s. The long zip wire cuts down the Amps for the transfer to a reasonable 16 amps. I know the small 1100ma A123s can take only about 7amps. A 4 cell A123 pack maxes out at 14.6 volts so it wouldn't quite get charged by one car battery. A 3 cell A123 pack could get overcharged by an auto battery.
MGB1977Red 3 years ago
You can charge the 2300mah cell up too 4.2volts per, so a 3 cell A123 2300 pack can be charge at 12.6 volts. So yes, you can charge a 3-cell on one auto lead acid battery. Again limiting the current flow by using a zip chord with the length of it cut so the current is max out to 10 amps per "P". We've done a 3 cell A123 pack zip chord directly to a car battery before, so it works.
The 1100mah, I usually charge them at 5 amps.
Corsair0829 3 years ago
Lithium Magnases Batteries?
flamarko 3 years ago
lithium ion batteries using nanophosphate™ technology
Corsair0829 3 years ago
can you recharge these batteries fast or will thay catch on fire like the lithium batteries
deauzie 3 years ago
how long would i need to make the wire to charge @ 5-7 amps? using just a 5s pack. do you need the 6s to make it the correct voltage? thanks.
TC3RACER 3 years ago