12S8P 30q cells experiencing voltage sag?[solved] (fake cells)

ESK8 Electronics
11

should i just keep decreasing maximum battery amps till the sag lessens enough that im happy? This will effect the riding behavior of the board as well im assuming, will it effect my acc or top speed though?

12

Acc yes. Max speed no but any sort of hills it would.

1 Like
13

I think watching the voltage while you ride and learning how to operate the machine with less sag is better than doing that, but doing that can give you a good idea of how it feels when you’re riding more efficiently, so after you turn it back up, you try to make it feel the same way most of the time … and know when it doesn’t feel that way that you’re causing sag.

1 Like
14

shucks, but I like going faast quickly lol… thats a good place for me to start.

2 Likes
15

Where did you buy your cells? Batt max of 25 is really low on an emtb tbh.

3 Likes
16

Shit, it was 30, just bumped it down to 25…but i still thought that 30 was norm for mtb. I bought from dhgate website… forgot who specifically. researched the seller though.

1 Like
17

I like 60 battery amps but still that is <10a per cell

18

Strange I get almost no sag, infact I rode about 5 miles on grass and I went from 50.4v to 48.8v

2 Likes
19

Im running unsensored sk3 149kv motors…are yall running sensored?? would that maybe be effecting things?

20

I currently run sk8 with one sensored and one unsenssored.

21

i was just thinking of buying one sensored motor just for startup purposes… both of your motors the same? just added a sensor? or 2 dif motors

22

Same motors. One of the sensors was DOA so I am one sensored and one not.

23

never buy batteries from sources you don’t know.

24

60a batt max is still low on a dual emtb. Guys here are running like 120a. I either think there is something wrong in the connections of the pack, or you have got some bad cells…

25

@J95hicks :arrow_up: :arrow_down:

3 Likes
26

I got mine from liionwholesale.com who certify their cells. Checked all the voltages when I assembled the pack.

27

i checked all 100 cells upon arrival, they were all within .03v at the correct storage voltage. So idk, they looked good. but idk

28

that doesnt say much, there are enough batteries with similar capacity but way lower discharge Amps.

1 Like
29

Care to explain. They are supposedly genuine 25r cells which are rated at 20a per. And at <10 they have extreme voltage sag.

30

that was supposed to be for @J95hicks, dunno about yours.

1 Like