The discharge rate could be a little bit to low.
yeah, true! forgot to add that I would ask for a 70Amp BMS. The cells are capable of more.
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For me the best value on the market is:
N.e.s.e modules sold by @agniusm
30q cells sold on nkon
Yes it is not cheap and a full 8p1s module is 500gr
But you built the battery in less than 1 hour with no soldering or special tool , it is bullet proof , full copper , the module have been tested over 200a …
When the cells are dead just change the cells and re use the module
So safety , time built , and long term money wise : is it a good deal i think and i will update my build post with this soon
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Fogstar wholesale comes in a bit cheaper than nkon.
Got 200 cells from nkon on sale for 3,45€/ cells ( have to check this… ) at the Time
All including vat and rate € for grade A cells ? Indeed that was a good price !
Thanks everyone - It is very nice to see helpful responses and encouraging people in a forum…
To continue the parrallel / battery pack / bms discussion…
Assuming we have 2 * pre-made battery packs (60v @ 20Ah for example) in parallel and each one has BMS protection, then would an additional BMS be required? I assume they would balance out in voltage naturally if the proper voltage was injected into the 2 parallel battery packs (each with BMS). Any disadvantage to that?
Hey @michion Did you buy any pack from this seller before? Problem with Chinese seller is you never can be sure if they are genuine cells or not otherwise this pack for around 500$ is an amazing deal
I received one of their packs last week. They have a lot of really good reviews and some of their reviewers have tested the batteries they have received.
I agree that most of the Chinese suppliers cant be trusted, but I did my homework on this supplier before I bought it, and Im glad I did. Great quality.
The price was OK, but this is only a 24Ah pack I bought.
Have you ordered from Fogstar before? Are they legit? I need some 30q’s.
I bought 500 25R’s from them. Built a 8S4P for my skateboard, a 12s14p for my foil and some other batteries for friends.
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Yes, you can connect two batteries in parallel, each with their own bms. They will balance, and battery with lower voltage will charge at max charge rate that its bms allows. You don’t need additional bms.
If you connect two batteries without bms, each battery at different voltage, you will probably blow or damage one or both batteries if there is big difference in voltage. Energy transfer would happen immediately, and batteries could not handle it.
Perfect -
On a tangent but related note, if the ESC is capable of attaching to multiple cells, does it make more sense to just connect to each cell vs. putting them in parallel? Then the ESC cuts off the specific cell if the voltage is too low. For charging purposes, keep them in parallel so only have to hook up 1 charger…
Hello everyone, I am trying to figure out what type,model of battery and charger would be more suitable and/or compatible for my build, with the parts you can see in the picture that I have already bought. I am not an expert myself, so anyone that has succeded can help. I approximately would like the battery to last up to 50-60mins. Also I am wondering what would be best a custom build one or a premade? I unfortunately cannot order from China or USA as the customs fees are extremely high and my budget is not that big.
However, I have plenty of space on the board for the battery. Please let me know of any cheap batteries and chargers that could work with the build.
Thanks in advance
George , Greece
I have almost the same setup as you.
I use 4 of these (actually on sale right now):
And this:
The charger is good since it charges two batteries at a time and have an onboard powersupply. Takes about 2-3h to charge the four lipo batteries.
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Hey Guys, what do ye think of this?
https://www.aliexpress.com/store/product/48v-35Ah-30Ah-25Ah-li-ion-battery-electric-surfboard-jet-board-foils-efoil-hydrofoil-fliteboard-80A/3517067_32961275021.html?spm=a2g1y.12024536.productList_8566397.pic_2
Would it work?
Price doesn’t seem that bad considering it comes with BMS, Batterys & Charger c/w free delivery to Ireland.
Thoughts?
Any update or purchase links>?
Hello,
I am also looking to make myself a Li-ion 18650 pack:
[https://fr.aliexpress.com/item/33002446800.html?spm=a2g0s.imconversation.0.0.1c8d3e5fYWNVpm](https://fr.aliexpress.com/item/33002446800.html?spm=a2g0s.imconversation.0.0.1c8d3e5fYWNVpm)
at Nkon I have 550 euros worth of VTC6 batteries to which I have to add a BMS 150 amp, a 5 or 10 amp charger, nickel strips…
So my question is do you think this kind of ready-made pack is good?
Is it better if I take a 12 or 14 S knowing that my ESC is a swordfich 300 pro over 15 s maximum?
And for the BMS 150 ampere is it enough or do I have to go on a 200 Amp continuous discharge?
The salesman tells me to use 21700s as a stack for this model:
https://fr.aliexpress.com/item/32983995323.html
What about 21700 batteries???
Thank you for your answers
I used Samsung 30Q’s (120 cells, 12s5p x 2) in one pack configuration. I am working on a board now that’ll be Sanyo 20700B’s (112 cells, 14s8p x 2) in another board. It really just comes down to what you wanna do. Both packs I can add a third pack for extra capacity and amps.
I don’t use a high amp BMS since each pack is wired together in parallel so it’s 60 amps per pack. I am using a Smart BMS now which is great. But really you should look into space and weight as to what works for you. The 20700 cells weigh a LOT more than 18650s.
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