Looking for words of wisdom if this is going to be ok to do.
I am working on a little mountain board build and can’t drop the cash on a real battery for now.
So I want to use the 2 Meepo ER batteries I have in Parallel.
They are each 10S2P 40T Packs, with Charge/Discharge BMS. 30 amps maximum discharge.
I plan on connecting them in parallel going into a Focbox Unity.
All good?
Yeah that’s good, just make sure they are the same voltage when you plug them into each other. I think you can wire the charge port in parallel but I’m not 100% sure
I was planning on keeping the charging ports separate on each battery.
keep us posted. I’m not sure if charging them individually while the mains outputs are connected in parallel will have undesired effects.
Well… that makes me nervous… would it be best to connect the charging ports in parallel?
@Jacobee They were 10s2p packs Meepo-style with BMSs in each. I supplied charge current to each BMS through a massive parallel adapter so I could use one charger for everything. 10s12p and it worked quite well.
I did something like that time ago. I used to charge both packs individually. I never had problems at all.
What about 2 packs in series?
I did that too. No problems.
I mean if you charge them together, like 2 10s packs with 2 10s bmses charging at 20s voltage
I did this on my board. You can check out the process here ( Evolve GTX 2nd battery in parallel ). I have sense removed all evolve electronics and am running a unity.
2 years ago I did the same thing with the crappy 10s2p samsung 22p batteries.
I definitely recommend wiring the charge port in parallel. The connector is a JST-RCY.
I have a similar setup with 2 meepo batteries and 5 one wheel style batteries for a 10s14p set up everything is connected in parralel and I use one of the meepo battery charge ports, the entire battery charges fine with a 5amp charger. Because everything is connected in parralel voltage remains the same in the entire circuit. Does not matter if you connect 2 or 3 or 5 ports in parallel. Everything will charge at the same rate. I guess one advantage would be less heating, but you should have any heating at 5 amps charge rate
jeez.
do I go a step further and throw my Crappy diyeboards battery in the mix.
Make it a 10S9P?
making it 3 packs, and one of them being different really fucks with my OCD…
http://www.diyeboard.com/10s5p-18650-lithium-battery-pack-36v-10ah-360wh-p-460.html
That’s kind of what my build is. I have my 5 one wheel style packs top mounted in a box and the 2 meepo packs bottom mounted underneath on my abortion of a board, but it’s got great power and super good range!
I may very well do that down the line. for simplicity and weight sake for now I am going to go ahead wiht the 2 10s2P packs hoping that the 10S4P 40T will give me at least 10 miles of riding. I have only been getting 13-14 miles with my set ups that I have with 10s6P 30Q and pneumatics , one Six Shooters and one with the TB 160s…
Should be able to get 10 miles, my 12s4p with the same set up get around 15
I would keep the packs the same for definite. Don’t use the diye pack at all.
I would open those packs personally and bypass the bmses for charge only and parallel wire the packs to one charge port after u charge both packs to full charge. Im currently running a 10s4p 30q parallel set using the revel kit batteries since its performance was shit. Works great and now i have way more range using the same packs and less dead weight on my board now that its a diy and not a prebuilt bolt on with low amp discharge preset to my motors.
