SKU: 25422682635

OptiMate TM-271 Lithium Charger 12/16V

$146.66 $162.95
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Description

OptiMate TM-271 Lithium Charger 12/16VOptimate TM 271 OptiMate Lithium Battery Charger TM 271 Professional OptiMate battery charger for 12. 8V and 16V Lithium batteries. (Plug type is USA 120V.) The Optimate TM 271 is perfect for high performance 12. 8V (4s) and 16V (5s) LiFePO4 LFP batteries that demand fully automatic, fast and accurate temperature controlled charging. Perfect for 12. 8V 16V LiFePO4 LFP batteries sized from 2. 5 to 200 Ah. Features a Power Saving stand by mode and Full

Optimate TM-271

OptiMate Lithium Battery Charger TM-271

Professional OptiMate battery charger for 12.8V and 16V Lithium batteries. (Plug type is USA 120V.) The Optimate TM-271 is perfect for high performance 12.8V (4s) and 16V (5s) LiFePO4 / LFP batteries that demand fully automatic, fast and accurate temperature controlled charging. Perfect for 12.8V / 16V LiFePO4 / LFP batteries sized from 2.5 to 200 Ah. Features a Power-Saving stand-by mode and Full electronic protection against errors. 3-year limited warranty.

Special Features:

  • Battery SAVE mode with BMS reset: starts from 0.5V with continuous monitoring / testing of charge acceptance or bad / shorted cell condition. Unnecessary (and unsafe) charging of a bad battery is prevented.
  • SafeTº:Automatic charge rate adjustment to ambient temperature sensed at the charger. Reduced charging below freezing, no charging if temperature is below -20ºC/-4ºF (can damage lithium batteries).
  • Ampmatic: Microprocessor adjusts current to ideal LiFePO4 charge curve to match battery size / condition, for fastest and most complete charge.
  • Protection against incorrect voltage selection: With 16V selected and a 12.8V (4s) battery is connected OptiMate 7 LFP Select will immediately warn that a low voltage is sensed and then not proceed to charging. USER must confirm the nominal voltage of the connected battery is 16V (5s) before SAVE mode activates. During SAVE mode the charge curve is tracked, if the battery appears to be less than a 5-series 16V battery, it will stop charging.

SAFE: No risk of overcharging. Totally safe for vehicle electronics. Sparks suppressed. Safe for long-term battery maintenance. Automatic shut-down if short-circuited or battery disconnected.

Details

  • ​​​​​​​Ideal for: LiFePO4 (LFP) 4s / 5s batteries from 2.5 – 200Ah.
  • Charging Amps: 9.5A @ 12.8V / 7.5A @ 16V (AmpMatic).
  • SAVE: Low Volt Start of 0.5V + 3-step low volt SAVE and TEST.
  • USE: Indoor / Outdoor (lowest temperature: -4°F / -20°C).
  • INPUT: Global (100-240V 50-60Hz), high efficiency (CEC listed), fully sealed.
  • STYLE: Weatherproof case with wall mounts, with 6ft / 180cm AC supply lead and 6ft / 180cm charge lead ending in SAE connector. Weatherproof battery lead & standard battery clip set.

10-Step Program

  1. Low Volt Start (0.5V).
  2. TEST before charge.
  3. Temperature check.
  4. Ultra LOW VOLT SAVE.
  5. LOW VOLT SAVE / cell monitoring.
  6. TEST – cell damage.
  7. Cell-balancing CHARGE.
  8. OPTIMIZE.
  9. TEST after CHARGE.
  10. OptiMate maintenance.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 25422682635

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4.0 ★★★★★
Based on 604 reviews
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Product Reviews
A
Verified Purchase
Alex
Houston, US
★★★★★ 5
Side brush screw PSA 🤪
Size: Eufy B-18Packs
Reviewing parts for Eufy L60 Review posted for some PSA When you get the brush replacement this kit comes with a tiny screw driver DO NOT USE THAT TINY SCREWDRIVER TO UNDO YOUR SIDE BRUSH IT WILL STRIP THE OEM SCREW AND MAKE IT USELESS. the screw driver included fits the screws that are about 2 mil wide the side brush screw is different. Grab a regular screw driver to undo a side brush. The main rolling brush cover is different but the rubber part still hits the floor at proper height so I don’t see a big issue there. When replacing the filter the filter cover was a little snug but I don’t see a big problem there just be aware to close the cover all the way but be careful not to push too hard so the plastic clips don’t break on the cover. Don’t forget to wipe down all the seals when installing the filter to maintain the seal integrity to keep the suction at top intensity. The dust bags seemed to be cut out with a stencil which gave the cardboard a better appearance than the oem cut out dust bags so that was interesting, dimensions were identical when comparing so I don’t anticipate any issues! Over all I’m glad we have cheaper alternative replacement parts that can be used so thank you! ❤️
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 30, 2025
A
Verified Purchase
Amazon Customer
Cuba, US
★★★★★ 5
Great parts replacement kit for Eufy!
Size: Eufy B-18Packs, Size: Eufy B-18Packs
This kit has made it nice keeping up with our Eufy robot vacuum. All parts were free of defect and fit as it should. Instead of replacing individual piece by piece, I now just change all of the replacement parts at one time and it’s good to go for a while! Great value. Great quality. Will definitely be buying this kit again!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
T
Verified Purchase
Terry Jeglum
Louisville, US
★★★★★ 5
Replacement quality is outstanding
Size: Eufy A-21Packs
Great value. Plug and play. Worked as designed
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
P
Verified Purchase
penny jerez
Grantham, US
★★★★★ 4
Perfect fit but originals last longer
Size: Eufy A-21Packs
With 4 cats and 2 dogs and using my Eufy RoboVac 11S Max twice a day until it dies, the brush and filters don't seem to last long. These replacement parts fit perfectly, but do not seem to have the same lifespan as the originals - would have to do the math to see if it would be worth buying original replacements, but that is probably case dependent. Overall happy, but took a star away for shorter wear life.
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Reviewed in the United States on December 1, 2025
H
Verified Purchase
Henry Holst
Cuba, US
★★★★★ 5
Excellent service
Size: 19pcs
Received parts in no time. Parts fit perfectly. Vacuum cleaner is back in operation at a very low price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026

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