Everything About The Battery Equalizer | Connecting Two Equalizers In Parallel

How to connect two battery equalizers in parallel and why.
If you added or thinking of adding more electrical devices to your dual battery system, you're going to need a bigger equalizer or add a second equalizer to keep up with the amperage draw.
The two equalizers can double the charging power to help the battery keep up with the demand and therfore not throwing the batteries out of balance.
Using an amp meter can tell you if you need a bigger battery equalizer.
Wire size is very important. For this system a #4 awg cable would be sufficient but I decided to go with 1/0 awg cable instead.
I did my own cable connections. Cutting installing the lugs crimping and protecting it with heat shrink.
I used 4 wwg cable for the main connections of the two batteries which are hooked in series to make a total of 24 volts.
The alternator is a 24 volt charging system but 12 volts are also being pulled from the first battery for the computer controls of the engine and transmission.
[e-mail]
charging dual 12V batteries 1992 mci 102dl3 8v92 ta allison transmission with electric controls DDEC ECM diesel engine diesel pusher bus conversion electrical system how to connect dual batteries to make 24 volts and how to pull 12 volts from a 24v system how to install a battery equalizer and what is a battery equalizer vanner equalizer and some bussman equalizers how to connect vanner equalizer in parallel to make more amps bus electrical system 24 volt charger 24 to 12 volt converter charger mr daniel explains on his cool blue custom coach corporation bus 1993 1994 1995 66-80 and 60-50A model

[@rickbartley9255]

Very good update. Thank you sir.

[@jeremybowen3097]

Any idea where I can find one of those sweet looking disconnects? I currently have two separate ones that are both kind of a joke

[@mrdaniel0078]

I've found most stuff on ebay and Amazon

[@CandyTok]

Any recommendations. If I have 2 12v 100ah gel batteries connected in parallel only not series, what product can I purchase to balance them?

[@mrdaniel0078]

You need a two bank smart charger. I use a few from Powermania but Noco is also very popular. I have 3 batteries in parallel and use a three bank charger to keep each one perfectly and individually topped off. It's a must.

[@CandyTok]

@@mrdaniel0078 Thank you i will look that up now

[@CandyTok]

@@mrdaniel0078 I should have mentioned that the 2 12v 100ah gel batteries will be connected to a solar charge controller and 100w solar panel. So my batteries connected in parallel will get a charge from solar but I guess I wanted to balance the batteries some how to make sure they are both at equal voltage as much as possible while connected parallel and to solar. Is a battery equalizer necessary?

[@mrdaniel0078]

An actual equalizer is technically not necessary as long as you start with batteries that are exactly the same in voltage, size, brand, and age.
The problem can happen later in time when one of the battery cells will start to deteriorate or go bad. You will never know when this will happen, unless you are going to check your batteries daily for months and years in the future.
If you're not planning on keeping an eye on your batteries on a daily basis, then you will need a "smart charger"
A 2 bank smart charger will equlize the voltage, maintain, and "recondition" the battery every time you turn it on.
This, in turn will give you piece of mind and freedom to work on other things.
You can use a smart charger all the time or only a few times a year if you feel like giving your batteries some maintenance.
I own a pair of gel batteries that are 11 years old but have been connected to a smart charger most of their life (RV that is plugged to shore power all the time)