Can BBSHD run on 15s battery pack

[zippy500zippy]

Looking at my battery build for a BBSHD. I am looking at a 52v battery 14s4p

Is or has anyone tried a 15s setup, I was thinking a 15s setup and charge the pack to 60v max which will mean each cell will charged to 4v.

I am lead to belive that the controller will take a max of 63v.

Are there any disadvantages to doing this, it will only mean four extra cells in the pack.

Any recommendations for a BMS for a BBSHD.

 

[Deleted member 4366]

52v is 14S. Yes they can run with that.

 

[zippy500zippy]

Yes. but will the system be happy on 15s battery with out any ill effects .

 

[Kinninvie]

As long as you don't exceed 62V it will run OK.
several ES members have done this.

 

[Weldinpatt]

I’m thinking of a 14 or 15 s system and using my normal 48V, (54.6V) charger 14s = 58.8V and 15s = 83V. The idea being to 80/90% charge up longer life.
Preparing the cells for assembly is a drawn out affair. Testing all the cells first . Internal resistance, capacity and voltage to be within 1/10th volt to avoid electron flow and potential heat . The Opus BT-C3100 I recommend but with four slots and 3.5 day testing times a hundred batteries will take for ever.
Would it be a good idea to utilise ( for instance) a 10s bms withe battery holders and discharge modules each , make a ten cell capacity and recharging unit.
Internal resistance is a quick in out test but capacity check is slow. Maybe place a thermistor on each cell too so nothing hot or cold. Store for a month and check for lost volts. Bring the majority back to 4.1V and use. Save the rejects for flash lights.
Is my plan a good one or not, where does it fall flat. The modules are reasonably priced from eBay . And fun to make too.
Basically I want a large capacity Wh. I don’t want a hot rod but I don’t want lag either especially at lower voltages. It doesn’t take many 14’s to make 100

 

[Nealh]

Part charging is only worth while if you can monitor individual cell balance, how are you going to manage that ?
If using a generic BMS the easiest option is to wire up a balance lead externally to the battery pack to use for monitoring, other wise one needs to use a BT BMS with adjustable settings.