OptiMATE Lithium 4s 0.8A, TM-471, 8-step 12.8V 0.8A sealed battery saving charger & maintainer
Condition: New
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Extended holiday returns
FREE refund/replacement until Jan 31, 2026 Learn more
FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026
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.
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Availability:
In Stock.
Arrives
Saturday, Dec 13
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
Output Voltage: 12 Volts (DC)
Specification Met: CEC
Manufacturer: OptiMate
Brand: Optimate
Model: Optimate
Item Weight: 1.57 pounds
Product Dimensions: 8 x 6 x 3 inches
Item model number: TM-471
Is Discontinued By Manufacturer: No
Exterior: Machined
Manufacturer Part Number: TM-471
Amperage: 0.8 Amps
Voltage: 240 Volts
Wattage: 15.00
Date First Available: November 11, 2014
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Dec 13
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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- Financing through Apple Pay
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Top Amazon Reviews
I also have the larger 5A Optimate lithium charger, and this one does just as well, albeit a tad slower on larger batteries due to the lower current rating - less expensive but certainly no less capable! Like all the Tecmate-Optimates, you can connect and walk away without setting anything knowing that you'll get the absolute best charge safely. Not often considered compared to other chargers is all the pre and post charge testing that gets done on a continuous basis, specific to the lithium chemistry. Something that lead-acid based chargers don't do properly with lithium. Close, but no cigar. Note that "walk away" does NOT mean leave for work or go on vacation. NO battery of any chemistry under major charge should be left unattended. Having said that, while I own and have seen the similar looking, lead-acid based "Optimate 2" do an OK job on charging lithiums due to it's overall simplicity, the lithium specific TM471 is a far better charger than the Optimate 2 for this purpose. You get lithium-specific voltage tracking, testing, low-voltage recovery, AND cell-balancing pulses near the end of charge you don't get with the lead-acid based Optimate 2. All voltages tracked accurately with my Fluke 87V monitoring the charge process, just like all my other Optimates. That's why I own more than one. :) The extensive post-charge testing (if you ALLOW it to actually do a 12 hour long-term test) can give you an indication of problems long before bike issues leave you stranded. I'm a battery geek and can quickly see through hype. No hype here. It is so refreshing to actually see a product do exactly what they say it does, and openly discuss it in the manual.
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Reviewed in the United States on January 23, 2015 by Ionic
Put a lithium battery in my Kawasaki Mule; big difference in starting. Bought this to make sure it starts every time, no matter how cold or how long it has been sitting. Solid product that protects your battery investment.
Reviewed in the United States on May 19, 2025 by Amazon Customer
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!
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Reviewed in the United States on April 30, 2022 by Margie Hammond Margie Hammond
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.
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Reviewed in the United States on January 23, 2017 by KLD
I have been into motorcycles for many years and that means I have been into motorcycle batteries a long time too! Lithium batteries are far superior for motorcycles. All aspects are enhanced-- less weight, no liquid acids, mount in any orientation, smaller yet more powerful, hold a charge and last much longer. Charging is different for Lithium and their are many motorcycle battery chargers out there for them. I have tried the upper tier of chargers and OptiMATE is a solid A+. The most sophisticated of the bunch and exceedingly easy to use. They have been in the business for a long time.
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Reviewed in the United States on January 30, 2025 by David M. Clifford
Well, I haven't used this new charger yet, but it looks and feels like a quality product! I would hope so, though, because for some reason, Shoraipower.com (well-known for their awesome, super lightweight lithium-ion batteries) lost their supplier for their chargers, and they recommended this one!!! Very strange, but ok...! Lol...
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Reviewed in the United States on August 23, 2025 by Don Wolf
On my new street bike, the charger indicated the red ‘!’ after charging, yet it is likely due to normal draw down of a key FOB bike with the latest electronics. The bike is always sensing for the FOB signal. Probably not a red alert!
Reviewed in the United States on March 7, 2024 by Tech Notes
I am satisfied with this battery charger that was recommended by the manufacturer.
Reviewed in the United States on September 14, 2025 by MCGEEE