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Description
GEM e4 (2005-Present) (72V) Fleet Lithium Conversion KitUpgrade Your GEM e4 to Fleet Lithium Replace the factory lead acid batteries in your GEM e4 LSV (2005Present) with a high performance 76. 8V LiFePO4 kit from Fleet Lithium. Complete conversion kit battery, charger, bracket, cables, and all hardware included. Choose Your Capacity Capacity Range Best For 76. 8V 105Ah Up to 75 mi Daily driving 76. 8V 168Ah Up to 95 mi Max range, all day use What's Included 76. 8V NexGen Fleet Lithium LiFePO4 Battery
Upgrade Your GEM e4 to Fleet Lithium
Replace the factory lead-acid batteries in your GEM e4 LSV (2005–Present) with a high-performance 76.8V LiFePO4 kit from Fleet Lithium. Complete conversion kit — battery, charger, bracket, cables, and all hardware included.
Choose Your Capacity
| Capacity | Range | Best For |
|---|---|---|
| 76.8V 105Ah | Up to 75 mi | Daily driving |
| 76.8V 168Ah | Up to 95 mi | Max range, all-day use |
What's Included
- 76.8V NexGen Fleet Lithium LiFePO4 Battery (selected capacity)
- CH8713 — 87.6V 13A LiFePO4 Smart Charger
- BR3374 — GEM e4 Bracket Kit
- AC0219 — AC Power Connector
- CB0917 — Cable Set (35.4")
- Digital State-of-Charge Gauge
- All mounting hardware
Key Specs
- 300A NexGen BMS with 800A peak surge
- Patent-pending fire suppression system
- Built-in cold-weather heater — activates automatically below 32°F (standard, not an add-on)
- Bluetooth monitoring — voltage, temp, cycle count from your phone
- 10-year warranty — designed and assembled in the USA
Fitment Guide
| OEM | Model | Years | Factory Voltage |
|---|---|---|---|
| GEM | e4 | 2005–Present | 72V |
For 1999–2004 GEM LSV models, see our separate GEM LSV listing.
Controller Compatibility
The GEM e4 uses a factory 72V controller. The 76.8V Fleet Lithium pack is designed to work with the factory system. No controller reprogramming is typically required for standard installations.
Will this fit my GEM e4?
Yes. The BR3374 bracket kit ensures a factory-fit installation. No modifications required.
Do I need to reprogram my controller?
No. The factory 72V controller is compatible with the 76.8V lithium pack out of the box.
How long does installation take?
30–60 minutes with basic hand tools.
Does it work in cold weather?
Yes. Built-in heater activates automatically below 32°F — standard on every pack.
*Range estimates are maximums under ideal conditions (flat terrain, single rider, 12–15 mph, 70°F). Actual range varies with terrain, weight, speed, and temperature.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
The easiest and best tooth brush!
Color: Pink (2-pack)
Ive tried several other dog tooth brushes for my 74 lbs Coonhound. This style and brand is the only one that is easy and works for us. It's easy to move your finger around and all sides of it have the cleaning nodules so no matter which way your finger turns, they are always touching her teeth. I like to try to open her mouth and get the inside of the mouth too. I loop my finger around her fangs. It is soft without harder parts so it doesn't make her pull away. This brush is perfect. It's a good quality and comes with a container for storage.
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Reviewed in the United States on March 3, 2026
★★★★★ 5
Total GAME CHANGER - incredibly effective toothbrush for dogs
Color: Clear (2-pack)
This silicon finger brush is incredibly easy to use - and so EFFECTIVE (more on that in the last paragraph this review). At first, it seemed a little hard to get on my finger but I simply got my finger wet first under the faucet and it slipped right on with virtually no effort. And once on, it's easy to take off but doesn't slip off accidentally when in use - so - perfect! Quick & simply to clean - rinses off in the sink in seconds, and ready to use the next time. And, my dog not only lets me clean her teeth - she actually like it (this from a dog who used to hate it when I would try to brush her teeth with a regular doggy toothbrush).
This silicon "brush" is incredibly maneuverable - way more so than standard dog toothbrushes or regular finger brushes. So much so it makes it super easy to not only get those normally impossible to reach back molars - AND - even the back sides of the teeth! With a normal dog tooth brush (or finger brush) my dog's clamping down made that impossible. Now, it's not only possible - it's easy!
Our dog's canine teeth had build-up but it was not until I pulled her gums back and looked at her back molars that I saw how bad things had gotten - and we have a young dog! Her back molars not only had build-up but some appeared to be stained a tea colored brown that did not come off with my fingernail. It was pretty disheartening and I felt terrible. How could this happen so quickly? The vet said it was plaque (and not yet tartar) and that it wasn't bad enough to warrant a professional cleaning - yet - but that I needed to do a better job brushing. He said: "I can see exactly where your brushing stops" (referring to the condition on the back molars which I had not been able to do with a regular brush as my dog just wasn't having it).
Tips: here's what's working for us. Instead of squeezing out a pea sized blog of tooth paste onto this brush, I put a tiny dab - that it's - on the very tip of the brush and focus my efforts on two of our dog's worst teeth on one side - on top and then on the bottom. Then I put another small dab and repeat on the other side of her mouth with 4 teeth on that side. Then, I use another small dab and focus work on another group of teeth. All totaled, I'm using maybe 4 to 6 very small dabs of dog toothpaste, probably half the size of pea collectively, perhaps less. That's it. However much you choose to use is up to you - be sure and use an amount that's safe and effective for your dog.
Effectiveness: this works and it works well! In just 3 days using the same vanilla flavored enzymatic toothpaste by CET I was seeing improvement. By day 7, that improvement was so obvious I was actually surprised by how much better they looked. It's now been a little over two weeks and they are looking considerably better! Conservatively, I'm thinking a 50% improvement. Not bad for just 2 weeks, right? I'm actually think I'm going to be able to completely reverse things - we'll see. I'll try and update this review again in a few weeks and let you know how it's looking but in the meantime, I am absolutely thrilled with this brush. I paid $16 and it came 2 in a pack) and the first (and only one) I've been using still looks brand new after it's rinsed off. All in all - this brush is a game changer! I can now brush our dogs back teeth and even the back sides of her teeth, all in less than a couple minutes a day.
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Reviewed in the United States on August 23, 2020
★★★★★ 3
Plastic not a brush
Color: Clear (4-pack)
Love the idea, dont care for the texture. It would be nice if they were soft brush and not plastic.
Would retuen but i missed the window.
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Better than a toothbrush!
Color: Blue (2-pack)
Perfect for brushing my doggies teeth!
Easy to use and my dogs like it better than a toothbrush.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Great dog toothbrush!
Color: Blue (2-pack)
I’ve been using this product for a year now, and it’s been working great. When paired with vanilla mint enzymatic toothpaste, it effectively cleans my Pomsky’s teeth, including the back teeth. As a result, my fur baby’s teeth remain as white as ever!
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Reviewed in the United States on May 27, 2026