David*BJ70
Looking forward to reach the end of the world
The only thing that should not be 24V is the beam light and the 2 dashs light (the one above the dash knoob and the one above the heater position / control)
24V charger
- Thread starter Chang-kuao-lo
- Start date
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The only thing that should not be 24V is the beam light and the 2 dashs light (the one above the dash knoob and the one above the heater position / control)
bj40green
Tssss, tssss
I'm not going into this discussion but want to say that if you connect all batteries straight with no taps you will be perfectly fine. Google for "battery banks" and the world opens up on series and parallel hook ups.
Here are a few example pics:
Do you think that these batteries are rotated every now and then????
Just food for discussion
Rudi
Here are a few example pics:
Do you think that these batteries are rotated every now and then????
Just food for discussion
Rudi
I use a 24-volt charger which eliminates the hassle of splitting the batteries and resetting the radio and clock. I have wired in a two conductor trailer conductors to make it a quick connection. I leave it on float charger mode for extended periods of inactivity.
A 12 volt battery has 6 cells connected in series and a 24 volt battery has 12 cells either as two batteries or in one case.
Schauer JAC0724 24 Volt 7 Amp Battery Charger | ChargingChargers.com
A 12 volt battery has 6 cells connected in series and a 24 volt battery has 12 cells either as two batteries or in one case.
Schauer JAC0724 24 Volt 7 Amp Battery Charger | ChargingChargers.com
While not 24 volt, if you are running two 12 volt batteries in series to make 24v (say in a BJ73), the Noco Genius 5x2 or Noco Genius Gen2 Mini are good options. They can be installed in the engine compartment and left hooked up to your batteries and simply plugged in to the wall for maintenance.
Not linked in FAQ:
forum.ih8mud.com
Not linked in FAQ:
Best battery charger for 24v dual battery systems
I asked them to bring it in...and they did! Charging, and equalizing and all that fun stuff, no need to disconnect batteries etc etc. Waterproof, leave it in the engine bay, come home, plug the car in and forget its there! Check it out! I just spent a whole wad of cash on two batteries. I'm...
forum.ih8mud.com
24V lead-acid battery pack? Two 12V lead-acid batteries are connected in series. The charger voltage should be 2*13.8V (27.6V) or 2*14.6V (29.2V).
In addition, you need to pay attention to choosing the appropriate charging current, which is generally in the range of 0.1C （C means the battery capacity）to 0.3C，0.15C is the most commonly used charging current
I use a noco dual 12 volt charger 2×2 amp.
This way I ensure each 12 volt battery gets what it needs while parking, and let the 24 volt alternator do what it's job while driving
I usually disconnect the ground while parking to prevent leaks, but not sure if that matters if you are charging while parking.
This way I ensure each 12 volt battery gets what it needs while parking, and let the 24 volt alternator do what it's job while driving
I usually disconnect the ground while parking to prevent leaks, but not sure if that matters if you are charging while parking.
a bit of overthinking here me thinks,
easy way to think about it
-you can connect to either 12v battery in a 24v setup if you go to BOTH the neg and pos battery posts for 12v boosting, trickle charging whatever
-if you go to the frame in these scenarios with the ground/negative, side then high side battery will give you 24v, ie 24v charging
-dont boost your buddies from the high side battery and neg cable to the frame.....
-dont 24v charge to just the battery posts (one pos post, one frame on the high side battery)
-never tap 12v off of one battery in a 24v system, it will overcharge the higher one and boil it and kill them sooner
easy way to think about it
-you can connect to either 12v battery in a 24v setup if you go to BOTH the neg and pos battery posts for 12v boosting, trickle charging whatever
-if you go to the frame in these scenarios with the ground/negative, side then high side battery will give you 24v, ie 24v charging
-dont boost your buddies from the high side battery and neg cable to the frame.....
-dont 24v charge to just the battery posts (one pos post, one frame on the high side battery)
-never tap 12v off of one battery in a 24v system, it will overcharge the higher one and boil it and kill them sooner
Yes, too much overthinking.
I use a NOCO Genius 2x2 to maintain my batteries on my 24v 92 JDM HZJ73.
Hooked up and maintaining for over a year now;
For a nice diagram look here:
Best battery charger for 24v dual battery systems - https://forum.ih8mud.com/threads/best-battery-charger-for-24v-dual-battery-systems.799407/post-14633703
I use a NOCO Genius 2x2 to maintain my batteries on my 24v 92 JDM HZJ73.
Hooked up and maintaining for over a year now;
For a nice diagram look here:
Best battery charger for 24v dual battery systems - https://forum.ih8mud.com/threads/best-battery-charger-for-24v-dual-battery-systems.799407/post-14633703
Well - my Noco Genius Gen5x2 just died. Started blowing both fuses on one bank. Did a bunch of testing and it is indeed the charger and not something in the truck. And to boot, I did not realize it so it messed up one of my batteries. I was running Group 25 Duralast Golds and they were fine until this. AutoZone warranteed both as the incident swapped polarity in the battery that the charger died on. AutoZone no longer sells the gold in Group 25 so they gave me two regulars. Not too pleased with that but at least I did not have to drop $400 on two batteries.
I was running the Noco in the engine bay so I just had to plug in the 120v.
So.....I am trying to decide if I want the big Gen5x2 or get a Mini2x2 like @LDRF has.
I was running the Noco in the engine bay so I just had to plug in the 120v.
So.....I am trying to decide if I want the big Gen5x2 or get a Mini2x2 like @LDRF has.
It sucks that the charger failed and torched your battery. Did you contact NOCO for warrenty support?
If you're just maintaining your batteries, then the 2x2 (NOCO - 2 Bank 4A Smart Battery Charger - GENIUS2X2 - https://no.co/genius2x2) works well. It's slower charging then the 5x2. I left mine for a day to recharge my two dead batteries, including one that I had to force charge. I have mine in the garage, and hook up to the batteries. As you are running yours in the engine bay, so you will need/should use the waterproof 5x2 (NOCO - 2-Bank 10A On-Board Battery Charger - GEN5X2 - https://no.co/gen5x2).
If you're just maintaining your batteries, then the 2x2 (NOCO - 2 Bank 4A Smart Battery Charger - GENIUS2X2 - https://no.co/genius2x2) works well. It's slower charging then the 5x2. I left mine for a day to recharge my two dead batteries, including one that I had to force charge. I have mine in the garage, and hook up to the batteries. As you are running yours in the engine bay, so you will need/should use the waterproof 5x2 (NOCO - 2-Bank 10A On-Board Battery Charger - GEN5X2 - https://no.co/gen5x2).
I've been using Victron chargers installed in both my 80 and BJ74 as the Victron can be used to charge the batteries and run a cycling load (fridge). Many chargers can not do this and I've had the NOCO shut down.
I do have and have used a two bank Noco as well as single bank NOCO that can be used for 12v and 24v. I think a vehicle mounted two bank is a good way to go, ensuring each battery gets what it needs and any imbalance is minimized. But for my use as a vehicle mounted charger I want the ability to have the fridge on and batteries being charged. I wish the NOCO could that and perhaps at some point they will; Without a cycling load no worries.
I'll be checking the batteries regularly and look at doing the battery swap once a year if needed, or put the two bank charger on it once in a while to address potential imbalance.
hth's
gb
I do have and have used a two bank Noco as well as single bank NOCO that can be used for 12v and 24v. I think a vehicle mounted two bank is a good way to go, ensuring each battery gets what it needs and any imbalance is minimized. But for my use as a vehicle mounted charger I want the ability to have the fridge on and batteries being charged. I wish the NOCO could that and perhaps at some point they will; Without a cycling load no worries.
I'll be checking the batteries regularly and look at doing the battery swap once a year if needed, or put the two bank charger on it once in a while to address potential imbalance.
hth's
gb
