Could one charge one's 24V system with two 12V automatic battery chargers, each connected seperately on each batt.?
Charging 24V system
- Thread starter Chang-kuao-lo
- Start date
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No you just need one charger and hook it to the motor for ground and postive on the one battery. AT least thats how the manual tells you to jump them, I think two chargers on the two separte batteries would be fine but I would disconnect the battery cables!
I don't know too much about it either, thats just what I've read
I don't know too much about it either, thats just what I've read
Chang-kuao-lo said:
Do your vehicle electrical system a favour, and disconnect the lines to the batteries, isolating them from the vehicle, when you go to charge them. Eliminates any accidents.
Also, if you are talking about jump starting and not battery charging....when jumping a 24V vehicle it is always wise to have a volt meter on hand to determine which battery is low, or if it is both.
If one battery is low, connect that battery to the cables from the battery poles, then go to the jump vehicle battery + pole, then final hookup is chassis ground on the jump vehicle with the negative lead (assuming a 12V jump vehicle).
I do NOT go to chassis ground on the 24V vehicle that is being jumped. It would be too easy to muck it up and cross something.
If both batteries on the 24V vehicle are low, use two jumper cables, and treat each battery independent, and go to chassis ground on each jump vehicle (assuming the jump vehicles are 12V).
If you do not introduce chassis ground on either vehicle then you can simply go from battery to battery, and leave everything hooked up. There is the chance of spark when doing the final connection, which is why chassis ground is always recommeded, as the spark will be away from any potential battery acid vapors...so if you go battery to battery, wear a shield, look to the side, protect yourself...etc.
Hope that made some sense...working on 4 hours sleep in 36 hours...
gb
crushers
post ho
i boost as if i was boosting a 12V, positive and ground of the same battery. i never ground to the frame.
charging the same way. postive to positive and ground to ground. i someitmes charge both at once using 2 chargers.
cheers
charging the same way. postive to positive and ground to ground. i someitmes charge both at once using 2 chargers.
cheers
This is a good topic. Especially the jump start procedure. Does anyone have any drawings of manual instruction to post?
Greg, get some sleep. Was Abby on fire last night?
Thanks,
B
Greg, get some sleep. Was Abby on fire last night?
Thanks,
B
- Thread starter
- #6
Do you disconnect the cables when charging with two seperate chargers? I'm just using two 2A automatic chargers.
You can charge two batteries from one charger. First is to disconnect the two batteries from your ride. Next, connect both batteries pos to pos and neg to neg. Last, connect the charger to either battery, it doesn't matter much which. Be sure you have plenty of time. You can best preserve what's left of your battery life with a slow charge. A 2A charger would probably need an overnight to reach a full charge.
Kalawang
Kalawang
lowenbrau
SILVER Star
Chang-kuao-lo said:
Yes, its as easy as it seems. red to + and black to -
do yourself a favor and boost on the baterie that is gounded to the frame that way your tied into the 12V part of the system then you can hook posotive to posotive and negative to negative and you won't blow up your donor battery. The same rule applies If you were to boost a 12V from your rig as the donor. Use The battery that is grounded to the frame!!
Well in my opinion boosting on the upper battery would not be a good idea unless you were to take it out of the series first because hooking to the negetive post without disconnecting it from the other battery is just the same as going negative to posotive on the first battery in the series and I sure you don't want to do that .
blownbj said:
No...in effect you will be putting a good 12v battery parallel to the bad high side battery but still in series with the 24v bank by boosting the high side battery if that's the one that's bad (which is probably very rare).
lowenbrau
SILVER Star
I'm making that same face that RAMullen makes when I ask him questions about Propane injecting and turbo charging IDI diesels.
As long as you are connecting a 12v charger or a 12 V battery to another 12V battery and you are doing it + to + and - to - it doesn't matter whether its a 12V or 24v or 600 v system. Ever wonder why a bird on a wire doesn't get electocuted?
Hey...Nice avatar, Bruce! 
lowenbrau
SILVER Star
Stone said:Hey...Nice avatar, Bruce!
I guess I was the only one who saw the humor in the lowrider 6x6 DaimlerChrysler product. I figured it was time to reintroduce Arthur Dent since his resurrection is, in glacial terms, imminent.
I just don't get why the manual tells you to ground to the frame?
lowenbrau
SILVER Star
Connecting to the frame is a safety thing. In the old days batteries used to gas off a lot of hydrogen when they were charging. Owners were expected to top up thier batteries with distilled water every so often as a result. The proceedure of connecting + to + and then - to ground (of the dead rig) was to have the inevetable arc from the final connection as far as possible from the explosive gas. These days batteries lose a lot less gas and it is a smaller issue though it's still wise to connect the dead battery last.
So conect one jumper to + on battery 1 and one jumper on + to battery 2?
right?
right?
