Prime Big Deals are live! View Deals
Search  for anything...
OptiMate

OptiMATE Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer

  • Based on 776 reviews
Condition: New
Checking for the best price...
$76.95 Why this price?

Buy Now, Pay Later

As low as $12.83 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: 12 left in stock
Fulfilled by Amazon
Arrives Oct 8 – Oct 9
Order within 11 hours and 34 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Features

  • Longer battery life and more battery power guaranteed.
  • Ultimate protection for your high-performance Lithium (LiFePO4 / LiFe / LFP) battery.
  • Saves dead batteries other chargers can't!
  • BMS (Battery Management System) wake up mode safely wakes battery with integrated BMS protection out of sleep mode.

Brand: OptiMate


Color: Black, Blue, Red, Silver


Product Dimensions: 6"D x 8"W x 3"H


Item Weight: 16 ounces


Output Voltage: 12 volts_of_direct_current


Output Voltage: 12 volts_of_direct_current


Input Voltage: 12 volts


Battery Charge Time: 6 hours


Current Rating: 0.8 A


Amperage: 0.8 A


Connector Type Used on Cable: clamps and ringlet connector


Number of Ports: 1


Item Dimensions D x W x H: 6"D x 8"W x 3"H


Item Weight: 16 ounces


Specification Met: CEC


Color: Black, Blue, Red, Silver


Brand: OptiMate


Mfr Part Number: TM-471


Global Trade Identification Number: 18


Number of Items: 1


Manufacturer: OptiMate


Unit Count: 1 Count


Built-In Media: Battery Charger, Battery Lead, Battery Clips


Item Type Name: OptiMate Lithium 4s 0.8A, TM471, 8-step 12.8V 0.8A Lithium Expert Battery Saving Charger & Maintainer


Model Number: TM-471


Warranty Description: 3 Years


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 8 – Oct 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Top quality item
Perfect for all my lithium motorcycle batteries. Even saved a battery on a bike i bought from a friend that was completely depleted of power. It is still holding a charge 1.5 years later. Dont need often but when i did it performed flawlessly.
Reviewed in the United States on August 21, 2026 by DON GORES
    • Great brand, always works as expected
Saved a completely dead battery in a few hours. Been using this brand for a decade and never fails except my old version that was for acid battery adhd said to be compatible with others doesn't work for the lithium when totally dead. Battery sat on bike dead for 7 months, this totally did the job
Reviewed in the United States on July 26, 2026 by Psyopsgaming.tv
    • Revives expensive lithium ion batteries!!!
Review Image by Lala
I bought this to save the dead lithium ion battery in my 2025 Husqvarna TE150. The other lithiom ion tender I was using previously was not able to charge the battery because it had gotten so drained that the ECU put it in sleep mode. The Optimate slowly brought it back to life and saved the battery! I'm so happy I purchased this! ... show more
Reviewed in the United States on August 27, 2026 by Lala
    • Flawless connect and forget charger at a great price
Review Image by Margie Hammond
Charger saved the EarthX ETX680 on my Sportcruiser airplane. It was discharged to 4.1 volts and several attempts to recharge it using a couple of different EarthX approved trickle chargers failed. I tried the EarthX recommended approach of momentarily hooking a good 12 volt battery in parallel with the trickle chargers to no avail and had resigned myself to having to replace the battery. After reading the reviews, I ordered the Optimate 4s .8A charger, which was received the next morning. I love this charger. It's totally automatic. Just connect and it interfaces with the built in BMS protection circuitry on the battery and goes into Save mode if the battery is more than 50% discharged. A light tells you whether it is in Save mode, charging, or fully charged. Unfortunately, the lights are not labeled, so I used my label maker to mark them, which is no big deal. This charger just works! ... show more
Reviewed in the United States on April 30, 2022 by Margie Hammond
    • This thing saved my Antigravity battery!
Incredible! This charger restored my presumed-dead battery. I accidentally shorted and almost fully drained an Antigravity 8-cell battery to a point where it was reading 2.9 V. According to Antigravity, you should never let your battery go bellow around 10.0 V or it will be irretrievably lost. If a battery is questionable at below 10.0 V, then it surely must be dead as a door nail at 2.9 V. Anyway, I was about to buy into Antigravity's pitch and buy a new battery when I read a few excellent reviews about this charger on amazon.com and bought one. It comes with everything you need and is 100% plug-and-play with nothing extra needed. It has several different modes and stages of charging batteries. When I connected it to my "dead" battery, the SAVE light came on and then after about 6 hours the CHARGE light came on and a few hours later my battery was fully charged reading 13.3 V. Five days later, the battery was still reading 13.3 V and it's cranking power seemed perfectly restored. ... show more
Reviewed in the United States on January 23, 2017 by KLD
    • Packs a Punch
Per the Shorai website, their #SHO-BMSO1 charger is only compatible with their batteries through 2021. 2022 onward, OptiMate became the designated charger. Its list of features & included attachments greatly simplify a mundane task. Highly recommended.
Reviewed in the United States on April 15, 2026 by David Martin
    • Strong charger
Easy to operate strong charger for lithium batteries...no complaints...charger and maintainer
Reviewed in the United States on May 29, 2026 by Deal Shuman
    • Good Quality
Been one of the best chargers I used. Much better than battery tender
Reviewed in the United States on April 1, 2025 by Martin

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...