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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 TimsBrickHouse
DO NOT BUY ANY THING FROM HISUN Period! I had the axis 700 for 2 months when a rat or squirrel ate both wiring harnesses. (Main & ECM)Wanna know why? Because the manufacture of these things in their infinite wisdom use either, a soybean oil or a peanut oil to run the wires through the the wire loom. Hmmm i wonder why they would be inclined to eat the wires. So now I have $10K machine that I've only had for 2 months when all this happened and they will not warranty it at all. It is going to cost me $800 to $1000 to get this fixed. Here is a link to a video showing where we took our Hisun notice how many are there:
https://photos.app.goo.gl/2FdniAoCyvTJMKae7
So counting mine, there are 16 of Hisun Axis on the lot that i took in for authorized dealer, with the exact same problem, plus other troubles that the mechanic explained to me. This particular place told me they are not going to work on them anymore. I will be posting this in as many places as possible to reach the masses. I hope its worth Hisun!
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By Tommy2bits
Just bought a brand new 2022 (NOS) Sector E1 with Lithium upgrade. (Single 135ah/200amp continuous). I've climbed a moderate hill in my woods probably 20 times since buying it. Today It won't climb it unless I am in Low. In High it almost makes it and then completely dies and I have to roll back down the hill. In Mid range (Max Range) I can't get 2 feet up the hill and the power output in only 100 amps, I have climbed this hill in every speed before many times. I put it on the trailer tonight and it wouldn't even get on the dang trailer in mid range. Torque is gone. That being said, when I am just cruising around in Midrange, it runs absolutely perfect with plenty of power. The only thing I did was charge it up, that is all. I charged to 100% using the charger that came with the battery. Before you think the BMS is shutting down due to overcharge protection, remember I am going UP hill so there is no regeneration AND I have done it before at 100% charge AND another big problem is that after 1 mile it is already down to 85% so it's not over charging and why is the battery draining so fast when I got 27 miles before. Battery output is fine in Low it pulls 200 amp up the hill just like normal so that doesn't point to the battery being the issue. All the individual cells on the battery are in line, so there is no dead cell either. I am tech savvy but to toward electric motors and I tried to cover all my bases. Please don't tell me basics like torque is reduced in High and Mid. The only thing I can think of is that I smelled something when I took my first drive today and I thought it was the Ebrake dragging but there was the correct amount of play in the cable and I jacked up the rear wheels and they spin freely. maybe something burned out in the motor, I do not knowm still runs great, we'll see if I have any trouble on the hills at the lake house this weekend. Maybe this is "Normal" and the settings were off before and was giving equal torque for whatever reason instead of 50% in Mid and 70% in High like the manual says....
For reference....this is it not even able to get on the trailer in mid range
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By dryvalleyboy
The steering shaft is slipping,I checked it's tight as the bolt will take at the u-joint.. Is there a slot or something it may have jumped? This is right after the shaft enters the area under the hood.Thanks.
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By MassimoNeverRunsLife
2021 T-Boss 410 — and yet another story from someone who bought one brand new without thinking twice about the fact there's no real service department like you'd find at an actual dealership.
The Problem:
Around 20mph, it bogs down like it's choking on something. Pedal to the floor, it sounds like it wants to go, but it just won’t. Makes no difference if it’s in 2WD or 4WD—same sluggish result. Reverse works fine. Shifts between 2WD, 4WD, and neutral without issue.
I’ve searched online but can’t find anything specific that matches what I’m (admittedly) guessing might be wrong. Truth is—I have no clue what the fk the actual issue is, and I don’t have the kind of mechanical memory others seem to when tearing these apart. That said, I’m good with my hands and can follow directions—I just don’t have any clear ones to follow right now. Any help or pointing to the right direction would be appreciated- next closest massimo service center was "fk you" miles away they said,
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