Combine LiTime/Redodo 24v clones

[solarstuff]

I have two clone-brand batteries a LiTime and a Redodo, both with identical capacity.

One is older, and one is within the last month.

I understand the chemistries will mimic the lower performer of the two, but if the sum total is still a good percentage of the total amount available despite that loss, is there any reason I can't individually top both up and wire them together to work together with my Growatt AIO?

https://www.amazon.ca/gp/product/B0BG88PFTD/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&th=1

https://www.amazon.ca/24V-200Ah-4000-15000-Lifetime-Camping/dp/B09BR5WJJ7?ref_=ast_sto_dp&th=1

 

[DIYrich]

Adding LiFePO4 batteries should not be a problem. Most problems are with Lead Acid batteries.

 

[Steve_S]

You can place them in Parallel without issues.

I understand the chemistries will mimic the lower performer of the two,

This is a Lead Acid Battery remnant, forget it ! LFP is controlled by the BMS's and not subject to that nonsense in the same way...
!! Make sure the batteries are at near identical voltage when adding the new battery in. Otherwise there will be a major in-rush for one of the lowest volt battery, that could be bad.
Make sure the battery wires to common DC Busbars are of equal wire length. This excludes fuses/breaker etc.
Fuse each battery, if they are 100AH batteries, then use 100A fuses.

Generic design for Paralled AIO's & Paralleled battery packs in a bank.

 

[solarstuff]

Do class T fuses need to be ignition rated for solar usage on 24v?

 

[solarstuff]

You can place them in Parallel without issues.

This is a Lead Acid Battery remnant, forget it ! LFP is controlled by the BMS's and not subject to that nonsense in the same way...
!! Make sure the batteries are at near identical voltage when adding the new battery in. Otherwise there will be a major in-rush for one of the lowest volt battery, that could be bad.
Make sure the battery wires to common DC Busbars are of equal wire length. This excludes fuses/breaker etc.
Fuse each battery, if they are 100AH batteries, then use 100A fuses.

Generic design for Paralled AIO's & Paralleled battery packs in a bank.
View attachment 185677

Thanks for your help!

 

[Steve_S]

If you are 24V, you can use MRBF, Class T or MEGA fuses without issue. I myself have an MRBF per Pack at my common-dc bus, everything else runs through DC Breakers. Below you will see I have PIKE Industries busbars (5/16 bolts) and BlueSea MRBF's. I offset the Red busbar with 3/4" which let's me keep it all nice & tidy with the (+) & (-) wires kept together.