






🔋 Charge smarter, race harder — never miss a beat with OptiMate Lithium 4s 6A!
The Tecmate OptiMate Lithium 4s 6A is a professional-grade 12.8V lithium battery charger and maintainer featuring a powerful 6A current, an advanced 10-step charging program, and integrated BMS protection. Designed for high-performance LiFePO4 batteries, it includes a unique wake-up mode and TUNE mode for ECU programming, making it the go-to choice for racers and enthusiasts seeking reliable, expert battery care.








| Manufacturer | TecMate |
| Brand | Tecmate |
| Model | OptiMate Lithium 4s 6A, TM391, 10-step 12.8V 6A Lithium Expert Battery Saving Charger & Maintainer |
| Item Weight | 9.6 ounces |
| Product Dimensions | 8.74 x 3.5 x 2.48 inches |
| Item model number | TM391 |
| Exterior | Machined |
| Manufacturer Part Number | TM391 |
| Amperage | 6 Amps |
Trustpilot
1 month ago
1 month ago
1 day ago
3 days ago