2021 Hisun Sector E1 Lithium Batteries

[Curt Gray]

Sorry if this is on this site new to going on forums

 I have a 2021 hisun sector e1. I've seen people say they put lithium in can someone point me to what and how many lithium batteries to put on this bike. Thanks I notice up hill the low range says 400 amps on the dash.

[GNFO]

There's this thread, which I contributed to a few months ago:  

I replaced my Discovery batteries with four ReLion Insight 48V batteries, which have the same form factor as the old batteries.  I went with them because of that, but mostly because each battery has a max continuous output of 100A, so the four of them combined can match the full 400A capability of the motor.  Also their tech support was great and sent me the new charging profile and instructions so I could flash the existing onboard charger to change it over to their custom lithium battery charging profile.

The fact that you can still see 400A with your original batteries is interesting, since I was never able to see that and was at the point of the UTV slowing down and throwing error codes when hauling uphill.  The upgrade isn't cheap, so you may want to make sure you're at the point where you just can't squeeze out anything more from your old batteries.  That said, the performance improvement is great.  Four batteries is plenty of capacity for my use, but if you require maximum range (and don't mind the cost) you can actually parallel 8 of them and still save almost half the weight compared to the Discovery batteries.