On my exp with this method of charging, btw it is called "zip charging", I have had great results. Usually my charging times vary on usage, but 10-15min on average.
The last few 100-200mah may take between 2-3 minutes, if you really want to charge them into your pack, otherwise if you fly 1 session, land, and charge you pack, knowing the you really didn't deplete it completly, but had an extra 500mah, then 10minute charging would be enough. But experiment for yourself. A123 and RC are the best.
...That is why I would suggest you start out with a safe amount of length to your 18 gauge wire, like 30 feet, then you start decreasing it to achieve; 10 amps on a 1p pack, 20 amps on a 2p pack, 30amps on a 3p pack.
Important, dont forget about your source(lead acid batteries, power supllies, etc). Make sure that it can handle this current draw from it.
...So, you cut the 18 guage wire to get the correct amount of current draw to your A123 pack. example: if you were to use a "6s1p" pack, then you would cut your the length of the 18 guage wire so that the flow of current will be at 10 amps(max charging current), using a depleted 6s1p A123 pack.
Once 10amps is achieved, this flow of current will continue until the pack is completly full, in which your indication on you meter will read a drop in current.
To set the amps you want to charge with in the beginnig, you 1st discharge your pack, then you start out with a 30ft 18gauge wire, place this between the lead acid batteries, and your A123 with an ampmeter in between to measure current, and you start cutting the length to increase the current flow, add to the length of the wire to decrease current flow. So the length of the wire is inversely proportional to the current. length increases current decreases, length decreases current increase.
Yes, we used a 24volt supply(two lead acid batteries in series), connected directly to two 6s2p. There are two 18gauge wires (speaker wires) at a length of about 14ft to drop the current to about 20-24amps per 6s2p pack. each "p" can be charged to a maximum of 10amps, since we have a "2p" pack, then you can charge each pack at 20 amps. SInce there are two 6s2p packs the lead acid battery is handling 40+ amps during the initial charge, after a few seconds it averages to 30-32amps from the supply.
can you charge 1 6s1p pack like that?
videocruzer 2 years ago
omg
is that it?
thats freaking awesome.
thanks
videocruzer 2 years ago
hi, i have a 7s1p a123 pack. will my car (chevy sprint) battery be able to charge my 7s battery pack ?
thank you.
troy777888 2 years ago
On my exp with this method of charging, btw it is called "zip charging", I have had great results. Usually my charging times vary on usage, but 10-15min on average.
The last few 100-200mah may take between 2-3 minutes, if you really want to charge them into your pack, otherwise if you fly 1 session, land, and charge you pack, knowing the you really didn't deplete it completly, but had an extra 500mah, then 10minute charging would be enough. But experiment for yourself. A123 and RC are the best.
Corsair0829 3 years ago
...That is why I would suggest you start out with a safe amount of length to your 18 gauge wire, like 30 feet, then you start decreasing it to achieve; 10 amps on a 1p pack, 20 amps on a 2p pack, 30amps on a 3p pack.
Important, dont forget about your source(lead acid batteries, power supllies, etc). Make sure that it can handle this current draw from it.
Corsair0829 3 years ago
...So, you cut the 18 guage wire to get the correct amount of current draw to your A123 pack. example: if you were to use a "6s1p" pack, then you would cut your the length of the 18 guage wire so that the flow of current will be at 10 amps(max charging current), using a depleted 6s1p A123 pack.
Once 10amps is achieved, this flow of current will continue until the pack is completly full, in which your indication on you meter will read a drop in current.
Corsair0829 3 years ago
hey how do u set amps its done while charging? or before? how do you get to that setting?
skl1cent 3 years ago
To set the amps you want to charge with in the beginnig, you 1st discharge your pack, then you start out with a 30ft 18gauge wire, place this between the lead acid batteries, and your A123 with an ampmeter in between to measure current, and you start cutting the length to increase the current flow, add to the length of the wire to decrease current flow. So the length of the wire is inversely proportional to the current. length increases current decreases, length decreases current increase.
Corsair0829 3 years ago
So when the charge is reaching the 3,6 volt per cell did the amps drop automatic??? thank you for the feed back
hobbystar1980 3 years ago
That is correct. The amps drop, when reaching full charge.
Corsair0829 3 years ago
PLease explein me better. Did you use direc conection between 24 volt lead acid and 6s1p a123?
hobbystar1980 3 years ago
Yes, we used a 24volt supply(two lead acid batteries in series), connected directly to two 6s2p. There are two 18gauge wires (speaker wires) at a length of about 14ft to drop the current to about 20-24amps per 6s2p pack. each "p" can be charged to a maximum of 10amps, since we have a "2p" pack, then you can charge each pack at 20 amps. SInce there are two 6s2p packs the lead acid battery is handling 40+ amps during the initial charge, after a few seconds it averages to 30-32amps from the supply.
Corsair0829 3 years ago
Thanks, great video!
jonathanbudlg 3 years ago
Why does the Ampere go down automaticly?
jakun2002 4 years ago