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By gridlock
After three years, my Sector completely died. Something caused the hot wire under the seat from the charger to disintegrate, so the batteries weren't being charged. The batteries weren't charging 100% anymore, so decided to convert to lithium.
As most others have done, I went with 4-48v batteries in parallel, as I believe that will be plenty of amp-hours for my needs, but can always add more if needed. I went with LiTime wired CAN batteries and mounted their digital gauge on the dash above the current one, which fit perfectly. I didn't think the existing battery brackets worked well for the new batteries, so made my own out of aluminum L rails, which makes it much more secure (and saves a few more ounces :)). Since I wired them in a 'balanced' configuration, I had to make all new cables from 0/1 gauge wire and 8mm posts. I updated the DeltaQ charger to profile 233. Cleaned everything up (I must have vacuumed 20 pounds of dirt!), put it all together and... wham!
So far, it definitely is better than with the original AGM batteries. Sustains speed better going up hills, and seems to have plenty of reserve current. The difference in weight with 4 LiPo vs 8 AGM batteries surely doesn't hurt!
Thanks to everyone on this forum, but special shoutout to GNFO who was a big help.
A few questions:
In the 'any tips' thread, EVSupport mentioned reprogramming the Sevcon to reflect the new discharge curve of the lithium cells, but I didn't see any more info about that or how to do that. Is there any more info about that?
Have folks replaced the onboard 12v battery, and if so, with lithium? I'm not sure why there is a 12v battery; why didn't they just step down the current of the 48v system to provide power to accessories?
Is there a recommendation as far as charging with the lithium conversion? As far as I understand, it is better to let lithium batteries discharge somewhat (but not completely) than keep them charging all the time. What do you think?
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By Jamesshoop1
This was happening to me regularly with the original battery pack, I would drive a few yards and power cut to the motor, no error code, dash works, lights etc, just no drive. Brake lights not on so I don’t think it’s a switch thing. Sometimes it would go back to normal after a few day sitting in the barn. I ended up changing to lithium ion battery 100amp 48v and the problem completely went away for two months so I figured it was something worth the old battteries. Now it’s doing the same thing again, I’ve removed every main electrical connection, cleaned it good, and put it back together. Battery is at100 percent and good voltage. What is interesting is it doesn’t matter how much power I’m drawing, if I’m just creeping along in low or flooring it in high it stops after the same amount of time, about 7 seconds. If I let go of the acceleration right before the 7 seconds I can keep driving like that indefinitely but obviously that’s pretty annoying. Or if I switch immediately to reverse I can back up and go back to F without cycling the key. Has anyone else run into this? It really seems like a safety switch issue to me but unsure what else to check.
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By Jarheadtx
I have a 2020 Sector E1. It's been a great UTV over the years and I did a lithium battery upgrade a few years back (complete game changer). Since owning the unit the dashboard and lights would occasionally flicker while driving, but not every time. I couldn't replicate the issue in any driving scenario and all fuses are good. The dashboard and several switches finally died completely this past weekend - meaning lights, winch, and dash lights do not work, but forward/reverse and speed work. I rechecked the fuses and all look good - any ideas on what else to check?
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By mark walkom
the regen braking on my e1 has stopped working unless (for eg) I am going down a hill in low and it's slowing things down to stick to the 10kph limit. when I drive and take my foot off the accelerator it's not initiating the regen to slow things down and instead just coasts at whatever speed it is at, or speeds up as the regen is not limiting it. the brake lights work, so it's probably not a fault with the sensor on the brake pedal
hoping someone else might be able to provide some suggestions on things to check, as the mob that I bought it off seem to have gone silent on me
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By SpaceGhost
As with any forum you join, there is a requirement for an obligatory introduction... and that seems fair. How else do you get that first post in there without jumping in with some stupid question right out of nowhere?
Hi. I'm Space Ghost. Well, not really, but that was my call sign on my last deployment before an IED made me non-deployable, and I an now retired/disabled, and living on my wonderful VA disability. I did almost 28 years in total between the Army, Army Reserve, and National Guard. 1 deployment with the Reserve (Desert Storm) and 3 with the Guard (1 pre, and 2 post 9/11)
Married (going on 30 years) one of each. (both out of the nest)
My vehicle is (at least not yet) not a UTV, however, it is an ATV, A 2001 Kawasaki Prairie 400.
BTW, That's Brandy, my former PTS/TBI service dog on the bike. RIP old girl. She's internet famous. Perhaps you've seen her before...
The reason I'm here is that Arthritis is starting to set into my wounds and my mobility is getting worse. I will be selling the quad bike soon, and going with a SXS, and have selected a Can Am model as the replacement, so I figured I had better get on board a forum somewhere. Just put in for my Guard retirement, and will be very soon looking to get into a Commander 6x6.
Wouldn't mind having the Limited with the Hvac system, but am really not sure it's worth the extra 10 grand or not. Plus it's 500 pounds heavier, and I prefer the doors off in nice weather. It's so much easier when working in the yard, and so much more fun when on the trail.
Anyway, I'm here now, so it will help me research more and make up my mind. Plus once I have it, I'll be able to share stories about it and of course, continue to learn more, as it will be my 1st sxs. Still have time before I get my retirement. Takes a good 90 days at least according to the guy I talked to... Typical government efficiency... lol.
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