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🔋 Charge smarter, last longer — never miss a beat with Tecmate OptiMate Lithium 4s!
The Tecmate OptiMate Lithium 4s 6A TM391 is a cutting-edge 12.8V lithium battery charger and maintainer featuring a powerful 6A output, an advanced 10-step charging program, and integrated BMS wake-up mode. Designed for high-performance LiFePO4 batteries, it ensures optimal battery health and stability, including a specialized TUNE mode for ECU programming. Compact, weatherproof, and backed by a 3-year warranty, it’s the ultimate tool for professionals who demand reliable, expert battery care.
| ASIN | B09Z71LQF9 |
| Amperage | 0.76 A |
| Best Sellers Rank | #552,652 in Automotive ( See Top 100 in Automotive ) #1,305 in Battery Chargers |
| Brand | Tecmate |
| Built-In Media | Battery Charger, weatherproof battery lead & battery clip set |
| Color | ['Blue'] |
| Current Rating | 6 A |
| Customer Reviews | 4.8 out of 5 stars 42 Reviews |
| Input Voltage | 240 volts |
| Item Type Name | Battery Charger |
| Item Weight | 9.6 ounces |
| Manufacturer | TecMate |
| Mfr Part Number | TM391 |
| Model Number | TM391 |
| Number of Items | 1 |
| Number of Ports | 1 |
| Output Voltage | 12.8 volts_of_direct_current |
| Specification Met | ecu |
| Unit Count | 1 Count |
| Warranty Description | 3 YEAR LIMITED WARRANTY |
M**E
Excellent
Works flawlessly with my EarthX batteries. A serious charger for the new world of Li batteries. Very robust, you get what you pay for. I would recommend to people I know but I'm the only one with the lithium batteries.
D**D
Best charger out there, its that simple.
I did a lot of research and I have used many different brands of chargers. The OptiMate series of chargers can't be beat. They are the most sophisticated and problem free chargers out there. I have a number of them and they always do the job. I have even been able to bring a couple of batteries back to life. Highly recommend this product in its many superior forms.
M**E
Optimate Battery Charger Review
This system works mostly autonomous and does a very good job of charging and monitoring battery charge and health.
H**R
This is for lithium batteries only, not a multi-battery profile smart charger.
It would be nice to have some clear instructions included, there's not much explanation about what the lights actually indicate, nor what the function button changes and why. I'm sure it was intuitive to the designer, but we are left with assumptions. I'm not sure what the 10 steps are.
E**7
Recommended for EarthX Lithium batteries
Very nice system. Recommended for EarthX batteries. Instructions could be a little clearer. The thing I like is you can permanent leads that can be installed on the battery. This allows you to manage the battery from a location without direct access to the battery.
M**W
Very easy to use
The manual has many modes of operation but it also functions perfect for a plug and play. I have a lithium ion battery on my motorcycle and it has kept the battery healthy in periods of no use.
N**K
Kind of complicated but works
Complicated instructions when it comes to all the features but works to keep my Shorai Lithium Battery LFX36L3-BS12, properly charged.
B**.
Would buy again..
10/10
S**S
Quality
Good kit works great
R**B
Perfect, cheaper than the Motorcyle branded charger...
Higher current charger enables me to reuse this for any other sized batteries I may have. BMS reset feature looks handy but have not had a chance to use it. Case seems really sturdy compared to other trickle charges I have, but they are rated 1 Amp and below...
A**R
Pricey but good quality and works well
Very nice charger but it is pricey compared to other models. That being said I love the quality of Optimate chargers and have several and they have all been reliable and helpful.
C**D
OK
OK
Trustpilot
1 month ago
5 days ago