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Litime

LiTime 12V 100Ah Group 31 LiFePO4 Deep Cycle Battery for RV Marine -2Pack

Based on 1,775 reviews
Condition: New
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$596.89
Holiday Deal · 10% off was $661.90

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Availability: In Stock.
Fulfilled by Li Time US
Arrives Nov 17 – Nov 19
Order within 5 hours and 34 minutes

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At a glance

Condition
New
Size
100Ah Basic (Group 31)
Set
2-Pack
Model
L12V100-100-TM-4-A100
Dimensions
6.77"D x 13"W x 8.43"H
Weight
24.3 lb
Voltage
12.8 volts
In the box
12V100Ah LiFePO4 Battery * 2Insulating Caps for Bolts *4M8- 5/8" (16mm) Terminal Bolts * 4

Features 7

  • Shipping Notice: Your order may be divided into multiple packages due to size/volume restrictions, resulting in sequential arrivals rather than a single shipment.
  • Longer Battery Life & Safe Use: Built-in 100A BMS prevents overcharge/over-discharge/short circuits/over-voltage/over-current/over-temperature, boosting safety & lifespan.
  • Ample Power in Compact Form: High energy density provides abundant power without taking extra space, fitting high-power needs.
  • Long-Lasting Cost Savings : 10+ year life & Max.15000+ cycles (10x longer than lead-acid) cuts replacement expenses.

Specs 21

Brand Litime
Vehicle Service Type Boat, Not Bluetooth Version. Not for starting batteries, golf carts, or jacks., RV, Trailer, Van
Size 100Ah Basic (Group 31)
Voltage 12.8 volts
Battery Cell Composition Lithium Ion
Item Weight 24.3 pounds
Product Dimensions 6.77"D x 13"W x 8.43"H
Number Of Cells 2

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 17 – Nov 19

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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Similar Products

Top Amazon Reviews

Exceptionally Good for It's Price Point
Size: 100Ah Basic (Group 31) Set name: 1-Pack
I bought two of these batteries (12V 100ah). First ordered one to test, satisfied I ordered a second. Both Received On-Time, Good Packaging. Extra terminal bolts provided each. Documentation is good, clear values for User programmed chargers. These are setup in series now to form a 24V 100ah battery pack. I opted to pay more by having two batteries rather than one 24V battery for a few reasons. As stated above, I was concerned with the quality and wanted to test one battery before doubling down for twice the expense. Second, these batteries have a battery management system which is internal to the battery. If it goes bad, chances are the battery will be useless. Having two go bad is unlikely. So I can always reconfigure my system to run from the good 12V battery. Finally, I have a lot of 12V stuff and having a pair of very good 12V batteries gives me more options. These batteries are well built, case seems generic but sturdy. Especially happy with the Terminals, they seem very firmly mounted to the case and hold connections tight. I've run several capacity checks on this, but the only full capacity test I made would be characterized as a .1C test. That is a constant discharge of 100watts, but in my case it was a refrigerator with defrost so when it did run it was about 110watts and about 330watts during the defrost cycle. I was expecting it to run about 39hours but it only made 32 hours. However, then I worked in the inverter efficiency (90%) and the vampire power used by the inverter even when it is not generating wattage. I did several different discharge tests and always got above 95% of the rated watt/hours. That is excellent considering the price point on these batteries in comparison to other similar batteries. I DO NOT recommend any PWM charger with these. I tried charging the battery with a Renogy Voyager and the pulses exceeded the max voltage causing the Battery's Management System to disconnect. Even though this Renogy charger has a LifePO4 setting. I contacted Renogy they were no help, I also contacted AmperTime and the good news is they actually responded. But I knew what the problem was and it simply was not a battery or Battery Management System issue. Needless to say I bought an MPPT charger, EPEVER Triron and it works great. But that is for another review. Couple more notes. I am shocked at how lightweight this battery is, they weigh about a third of what a typical flooded battery would. Every time I pick them up I am surprised by their lightweight. I am sure RV people will appreciate this. The max voltage I got on these batteries is 13.5V after it settles, I was expecting 14.4V. Without making this longer, don't worry about it. It is a weird charge curve and 13.5V is basically 99% charge. My discharge test confirm these batteries will perform to there approximate 100ah rating. In Summary, very happy, highly recommended and I did buy two, perhaps get more in the future. ... show more
Reviewed in the United States on June 21, 2021 by Kontrols
Great Customer Service!
Size: 100Ah Basic (Group 31) Set name: 1-Pack
I ordered a 12v 100ah battery from Li Time in October of 2021 (at that time they were AmpereTime) and put it in my travel trailer. After 4 years of camping - with no problems - I noticed an issue with the battery holding a charge. I contacted Customer Service - Leah was the rep I worked with, very polite and professional - and they got back to me very quickly with a couple of suggestions. After following the directions I still thought the battery wasn’t functioning correctly. I contacted them again, and again they got right back to me with a couple of tests to perform. This too didn’t work as I expected. I have my system run through a shunt multimeter so I was able to provide photos of the batter’s state of charge in different conditions. I then contacted Customer Service again, and this time they emailed me a return label, and asked that I send the battery to them at their expense. I expected to hear from them in a week or two, but the morning after I shipped it, and they had received confirmation from the carrier it was on the way, they notified me that they had already shipped a new replacement battery! In my opinion this is a well made battery, and Li Time definitely stands behind their product. I am so impressed with their Customer Service, and rate them 5 stars! I recommend this battery to anyone who asks. ... show more
Reviewed in the United States on February 3, 2026 by FDS
Impressive
Size: 100Ah Basic (Group 31) Set name: 1-Pack
I wanted something reliable. I've spent so much time learning the things I need to know, and quite a bit of money for the best components I could afford. When it came to the batteries I wanted to get what are considered by many to be the top of the line, but frankly they are a lot more than I'd hoped to spend. I just can't reason why this many years into lithium battery development it should still cost so much to get a reliable and safe battery with a quality BMS. So I read the battery reviews on Amazon, which I love and rely on but always take with a grain of salt, and then I looked to some solar forums around the net. One in particular dated back awhile and everyone seemed impressed with Ampere Time batteries, and they all seemed way more knowledgeable than myself about it. At less than half the price of the highly rated ones I decided to bite the bullet and take a chance on what might end up being a weak link in my solar system where I really should have invested heavily. My battery order shipped the day after I ordered it and it arrived about a week later across the country from California. On first impression the box was nice and strong, and upon opening the box I found the battery completely secured and cushioned with thick and dense foam inserts. The paperwork, a large 10 page color brochure on the company/product brochure/product manual/and lifetime service card, all came in a thick clear vinyl zip case that reminded me of the type that comes with a new boat. The manual is in color with lots of graphics and is nicely readable and easy to understand. Few companies these days seem to give their product this kind of attention and I was already feeling like I'd made the right decision. The battery has a nice wide soft nylon strap across the top length of it to assist in carrying, even though it isn't a very heavy battery, which also made it easy to remove the battery from the box. Both 100ah batteries I bought were in perfect condition and both were charged exactly at 81%. I've only used them for about two weeks steady so far but they have been working flawlessly on a 600w 36v array with a Victron controller. I've ran a 8000btu LG window air conditioner on it with a 2000w continuous/4000w surge inverter, and I've ran things like a large side by side refrigerator/freezer, my 1250w inverter microwave, a 1500w portable infrared stove, and a large oscillating fan (not all at the same time). The seller has reached out to me more than once to ensure I'm happy with my purchase. Five stars because I couldn't be happier and I have no downside to report. My first impressions were high enough that I ordered two more 100ah batteries, for the max total of 4 allowed in a bank, to help me expand a little. I'm a real customer of this product and I wasn't compensated in any way for this review, if you found this review helpful please click the button. ... show more
Reviewed in the United States on March 2, 2022 by HomeJim
Astrophotography/Astronomy
Size: 100Ah Basic (Group 31) Set name: 1-Pack
Review Image by Christine
Review Image by Christine
Review Image by Christine
This single battery replaced two SLA batteries and essentially doubled the capacity for a third of the weight! I am not getting any younger and lugging around over 60kg of batteries for a single weekend of remote AP/EAA just wasn't a chore I looked forward to. While my setup isn't light, at 21kg, it is much more than just the battery. The battery charger doubles as a regulated power supply for when AC is available on site and I also carry a much smaller spare battery for incidentals such as cell phones or, just in case, for a remote laptop power supply. I can power the following for over 26 hours with this single battery -1 laptop -1 scope side windows machine and power distribution box -1 portable monitor -1 cooled astronomy camera -4 dew control heater bands (main scope, guide scope, and visual scope and eyepiece) -1 robotic focuser -1 alt-az telescope mount & derotator My setup also uses a 400W inverter for remote AC power when needed. The last full cycle charge was 100.2Ah! This tells me that the AmpereTime 100Ah battery was useable through its entire available potential. My equipment needs at least 11.8 volts and this battery stayed above 12v under load for the entire 26 hours. This is something the two SLA batteries could NOT do ever. Yes, I am happy with this purchase and battery. UPDATE: After using the battery for the entire summer season (it still gets cool at night) I am very pleased with its performance. It exceeds expectation and continuously gives me at or over the full 100Ah of use above 12V. This single change to my setup has allowed new dimensions of freedom. But what I find equally compelling is the responsiveness of customer service. I had a question about battery orientation which was quickly answered giving the reason why as well. Again couldn't be happier recommending this as a power source solution for those of you who do remote astrophotography, photography, or any remote work requiring a reliable power supply... ... show more
Reviewed in the United States on August 17, 2022 by Christine
UPDATE below: Does NOT have 1 degree C low temp cut-off
Size: 100Ah Basic (Group 31) Set name: 1-Pack
Update: Ampere Time has refunded my purchase of both batteries and is sending a shipping label for return. They are allowing me to keep one to test to see if it handled the cold better than expected. I think I will provide for 12v heating in my compartment and continue to use this brand. This customer service is amazing! Thank You Una. I loved this battery until I was informed that the information on Amazon web page lied. I liked the shipping time, packaging, and the apparent overall quality of the product. However, this battery does NOT stop charging at 1 degree C as advertised. I have potentially destroyed two batteries at this point. Hopefully my Renogy DCDC/solar charger did stop charging at 1C. It appears to have stopped charging at 1C, but I haven't been able to check yet. This is a cold winter and the batteries are in my RV. I thought they were protected. Will Prowse , Youtuber, showed the lack of low temp BMS protection then I saw a reviewer here (Chris?) received the same email I did from Ampere Time: "Dear William, We’re really sorry for the confusion and the misunderstanding. The BMS in our battery has low temperature cut-off protection function, but if we set this function on our battery, the battery can neither charge nor discharge under 32F/0C. At the beginning, we had set up the low temperature cut-off function for our battery, but later many customers responded that they needed to be able to discharge under 32F/0C. After careful research, our team has decided to block this function. Currently our battery can be charged at low temperature, but it is charged with a very small charging current. And we’ve used auto motive grade battery cells which have superior quality. Even if charging in low temperature environment, it will not damage the battery. And as what we’ve listed in the charging temperature, we don’t recommend charging under 32F/0C. We will optimize our relating marketing info. We're sorry for any inconvenience caused. Look forward to your reply. Best wishes, Your friend Una From Ampere Time " My bad going for price over known quality/company. Bill ... show more
Reviewed in the United States on February 9, 2021 by B. Pierskalla
Best upgrade I’ve done to my boat.
Size: 100Ah Basic (Group 31) Set name: 1-Pack
I’ve been running this battery in my boat for the last three years, probably the best upgrade I’ve done. Battery last forever, I can run my trolling motor at full power for an entire day of fishing. I leave in half charged for 2 months, go plug it in and it’s ready to go. Super light for the size. Buy one you will not be disappointed. ... show more
Reviewed in the United States on August 8, 2026 by John Arbuckle
Very Impressed
Size: 100Ah Basic (Group 31) Set name: 1-Pack
I have bought three of these now. One for my stand-alone electronics and two for my 24-volt trolling motor. I fished 5 hours with the trolling motor lithium batteries and only used 2.9% of the two hundred amps. most of the time I was anchor locked with the trolling motor so the motor was running pretty much constantly. i used a Qwork battery monitor to observe the voltage, amp draw, and battery percentage. The batteries charge up fairly quickly. I use a Noco Genius Gen Pro 10x2 smart battery charger for lithium batteries. Be careful to not charge these below 32 degrees F. A workaround for this is I use Facon silicone battery heaters with thermostats. I put 2 4x4 ceramic tiles (Smooth side of ceramic to silicon heating pad) under the battery heating pad and two 4x4 ceramic tiles (smooth side of ceramic to silicon heating pad) on top of the heating pad then put the battery on top of the 4x4 ceramic tiles. I took readings for a month with temps in my unheated garage that regularly registered 20 degrees f in the winter. I took temperature readings of the lithium batteries in several different places on the batteries (With a temp gun). most times temperature registered 42 to 46 degrees Fahrenheit fairly consistently during that period. Very impressed with these batteries compared to my longtime use of 31 series deep cycle lead acid batteries. reducing the overall weight factor in my boat as well as not lifting two 75 lb batteries in and out of my boat was a welcome relief. I watched many teardowns of this battery on youtube. most were very impressed with the build. I am sold. ... show more
Reviewed in the United States on April 16, 2023 by Badaxed
Do not trust Warranty! Do not trust product! Do not trust Supplier!
Size: 100Ah Basic (Group 31) Set name: 1-Pack
If the product does not meet warranty not only do they charge you for shipping to return their junk they also charge you depreciation for the time you used it. Original purchase was approximately $700 and they will only refund about $434. Fraud! Copy and paste statement from the company cheating potential buyers. "Thank you so much for your cooperation. As you prefer to return the batteries and get a refund directly, I have applied for return prepaid labels and I will send them to you in my next email. Since the order was purchased on 2024/3/28, there's already 18 months from your purchase date, and we offer a 5-year warranty on your product, which is 60 months. So in this case your product depreciation is $699.98/60*18=$209.99. (The calculation process to arrive at this amount is that the first amount is your purchase price, 60 is 60 months, which is the 5 years mentioned in the warranty, and the last figure is the number of months you have used the product.) As our battery is heavy and hazardous good, it will cost us $56(shipping the two batteries to you, which we have born previously)+$56(shipping back to us)=$112 shipping fees if you need to return the batteries, the latter may be born by you. So if you choose for a refund, the refund also deducts product depreciation and a part of shipping fee, which will be deducted from your order,that is $699.98-$ 209.99 -$56=$433.99. After returning the product, pls kindly inform us and we will refund you within 24hrs after the logistics provider has updated the delivery status. Looking forward to hearing from you soon. Best wishes, Your friend Jean From LiTime (Originated from Ampere Time)" ... show more
Reviewed in the United States on October 2, 2024 by DB
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