- Thread starter
- #21
There's a (relatively) easy fix though as others and myself too have already done the conversion to 24v headlights. I have brighter headlights, a much simplified system with less relays and no centre tap.
Best battery charger for 24v dual battery systems (1 Viewer)
- Thread starter markthemenace
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mulebarn
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Reviving this ancient thread. I have a HZJ73 with 24V, and a NOCO 12/24 maintainer/charger. Could someone explain which batteries and posts I’m supposed to hook it up to, and why? Thanks in advance.
mulebarn
GOLD Star
I *think* this is accurate, where the ground is the battery closest to the firewall? Hoping someone can confirm. Thanks.
Old thread revival.
This is on Prime Day (turn off you add blocker):
Amazon product ASIN B08G3STB1N
With the NOCO 12v x2 charges you hook up a pair of leads to each of the two 12v batteries +/- and +/- one on each. They have a processor to allow this. I have not tried this with the Battery Tender I am currently using.
This is on Prime Day (turn off you add blocker):
Amazon product ASIN B08G3STB1N
With the NOCO 12v x2 charges you hook up a pair of leads to each of the two 12v batteries +/- and +/- one on each. They have a processor to allow this. I have not tried this with the Battery Tender I am currently using.
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This is my setup but I found that disconnecting the terminals from the truck works a lot better when using two smart chargers like this one so that they are completely isolated and not tripping each others up. I use the quick disconnect switches on my two batteries.
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I have the Genius as well. Made a little bracket for it and put it by brake booster on my LHD Bj73. After a few months, no issues at all.
Nice. Do you leave your batteries hooked together? Just curious. I understand it is not necessary to unhook them.
I finally remembers to test my X2 Battery Tender to see if it acted okay leaving the batteries hooked together.
Also - I mentioned somewhere I was going to try to use my dual lead 12v Battery Tender on the BJ73 with the batteries still hooked up in series.
The Tender appeared to be working but it got hotter than I have noticed before so (out of caution) I disconnected the cable between the batteries as I normally do and it almost immediately indicated charged and cooled down. I do not think the Battery Tender brand has the same smart tech as the Noco.
The Tender appeared to be working but it got hotter than I have noticed before so (out of caution) I disconnected the cable between the batteries as I normally do and it almost immediately indicated charged and cooled down. I do not think the Battery Tender brand has the same smart tech as the Noco.
Interesting. I had a battery tender brand for years attached to my 40 and it would get hot from time to time. I read that the metal case of the battery tender is also not recommended for 24v because it used the case as a ground. I leave the batteries connected up and just attached the charger connections to their posts. I read somewhere it isolates them inside its circuits but I could be wrong.
My Tender has a plastic case.
I will probably spring for the noco before primeday is over
FWIW I've used a Noco 7200 to charge my 74's 2 batteries in 24v, and also used a Noco 4 bank wall charger to maintain each battery separately @ 12v ea (without unhooking anything). No problems.
My HDJ81 has one of those Noco 2 bank chargers mounted under the hood and it works well.
My HDJ81 has one of those Noco 2 bank chargers mounted under the hood and it works well.
I just pulled the trigger on a Noco 5x2 on Amazon with the intention of mounting it in the Bj73. It may be a few bucks off for Prime Day.
From here: NOCO - Series And Parallel Charging - Support - https://no.co/support/series-and-parallel-charging
With that in mind, the Noco 5x2 is rated at 120Ah and the 10x10 is rated at 230Ah.
So check the size of your two batteries and buy accordingly.
With that in mind, the Noco 5x2 is rated at 120Ah and the 10x10 is rated at 230Ah.
So check the size of your two batteries and buy accordingly.
That's is good info but the BJ73 is hooked up in series not parallel so 120Ah is just fine.
