Mixing old & new batterys grin LiGo

[niwrad]

Hello,

I was wondering if there's any particular way to arrange batteries to make a pack when having old and new ones.

For reference using the airplane portable LiGo from Grin. Each one has two pairs of positive and negative terminals. I've used four of them together for about 2 months daily, using approximately 70-80% of combined capacity per day. Thinking of adding 2 more and want a simple way to connect them.

Here is what I was thinking:
72V output, with 3 in parallel 2s3p, plus parallel output using a Y cable from Grin

Battery 1
1. +/- to battery 2
2. + to battery 4, - to output
Battery 2
1. +/- to battery 1
2. +/- to battery 3
Battery 3
1. +/- to battery 2
2. + to battery 6, - to output
Battery 4
1. +/- to battery 5
2. + to output, - to battery 1
Battery 5
1. +/- to battery 4
2. +/- to battery 6
Battery 6
1. +/- to battery 5
2. + to output, - to battery 3

Is there any reason to arrange the new and old batteries in any particular way?

 

[amberwolf]

If the four you are using now are setup as two parallel sets of two series packs, then you simply add the new ones as a third parallel set of two series packs.

You don't want to put the new ones in series with old ones.