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Availability:
In Stock.
Arrives
Nov 1 – Nov 3
At a glance
- Condition
- New
- Size
- 1 Pack
- Set
- 165Ah Bluetooth（Group 31）
- Model
- EA-A21121B-0D
- Dimensions
- 6.77"D x 13"W x 8.5"H
- Weight
- 32.2 lb
- Voltage
- 12.8 volts
- In the box
- 1 * LiTime 12V 165Ah Battery1 * Product Manual2 * Flat Washer2 * Insulation Caps2 * M8 - 5/8" (16MM) Terminal Bolts
Features 7
- Bluetooth 5.0: Auto-connects, monitors real-time, controls discharge. Tracks battery status easy. Keeps your adventures powered smoothno interruptions.
- Low-Temp Protection: Cuts off if charge <32F/discharge < -4F. Stops cold damage. Battery stays safe, reliable even in extreme cold.
- Multiple Protection : 20+ BMS safeguards, IP65 waterproof, salt fog-resistant. More durable in harsh spots. Battery lasts longerless worry in tough conditions.
- Top Grade LiFePO4 Cells: Auto-grade cells, BMS blocks overcharge/overcurrent. Stable for 10 years. Reliable performance long-termno frequent issues.
- Expandable to 33.79kWh: 4P4S (51.2V 660Ah) for more power. Fits RVs/home backup/trolling motors. Meets growing electricity needs easy.
- Tips: Charge with lithium-activation or MPPT charger to activate Bluetooth after first receipt or switching off. Not suitable for starting batteries, golf cart batteries, or jacks.
- Protection Upgrade: This LiTime product is covered by AIG Product Liability Insurance, effective from May 22, 2026.
Description
12V 20A Lithium Charger 12V 2000W Inverter 12V &16V 20A Charger 500A Battery Monitor 12V100Ah Group 31 Battery 12V100Ah Group 27 Battery 12V100Ah Group 24 Battery
Specs 21
| Brand | Litime |
|---|---|
| Vehicle Service Type | Ideal for RV, Marine, Trolling Motor, Boat, Travel Trailers, Home Energy Storage, Solar Power Storage., Not for starting engines, golf carts, or jacks. |
| Size | 1 Pack |
| Voltage | 12.8 volts |
| Battery Cell Composition | Lithium Ion |
| Item Weight | 32.2 pounds |
| Product Dimensions | 6.77"D x 13"W x 8.5"H |
| Number Of Cells | 1 |
| Terminal | M8 |
| Battery Capacity | 165 Ah |
| Compatible with Vehicle Type | Ideal for RV, Marine, Trolling Motor, Boat, Travel Trailers, Home Energy Storage, Solar Power Storage., Not for starting engines, golf carts, or jacks. |
| Automotive Fit Type | Universal Fit |
| Item Dimensions D x W x H | 6.77"D x 13"W x 8.5"H |
| Battery Type | Lithium Ion |
| Brand Name | Litime |
| Manufacturer Part Number | L12V165-165-BT-4-A100 |
| Item Highlight | Bluetooth, 165A BMS, Max 15000 Cycles, Low Temp Protection, IP65 Waterproof, 2112Wh, for Trolling Motor, Travel Trailers |
| Model Number | EA-A21121B-0D |
| Manufacturer | LiTime |
| Number of Items | 1 |
| Manufacturer Warranty Description | 5 Years |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Nov 1 – Nov 3
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
Perfect power source for my trolling motor — love the Bluetooth feature!
Size: 1 Pack
Set name: 100Ah Bluetooth（Group 27）
I bought this LiTime 12V 100Ah LiFePO4 battery to power the electric trolling motor on my boat, and it works amazingly well! Pros: Bluetooth Monitoring: The built-in Bluetooth feature is super convenient! I can easily check the battery status, exact state of charge, and voltage right from my phone while out on the water. Lightweight: It is so much lighter than traditional lead-acid or AGM batteries. Moving it in and out of the boat is effortless now. Long Run Time: It provides steady, consistent voltage all day on the water without fading like lead-acid batteries do. Reliable Power: Plenty of power to run my trolling motor for hours of fishing. Compact Fit: Great Group 27 form factor that fits standard battery boxes. Final Thoughts: If you need a reliable, long-lasting, and light battery for your trolling motor or fishing boat, this is definitely worth every penny! The Bluetooth connectivity makes it even better. Highly recommended!
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Reviewed in the United States on September 20, 2026 by Roman Pozdnyakov
Great battery
Size: 1 Pack
Set name: 100Ah RV & Trolling Motor(Group 31)
I had it for two and half years used it every week sometimes multiple days. Used for a 45lb trolling motor. Used in fishing tournament with 8 hours on the water where I was judge, so I was constantly moving and it lasted the 8 hours plus 4 more the next day. Charged during the break and lasted the entire tournament. Very impressive battery life. Unfortunately the price has doubled since I bought it otherwise I’d buy another one. Performance was amazing. Just sold it with my boat. It’s 1/4 the weight of an acid battery. Plug and play
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Reviewed in the United States on July 17, 2026 by Sean
Very good and reliable batteries
Size: 2 Pack
Set name: 100Ah Heating & Bluetooth（Group 24）
I have four of these.. two in my Jeep, two in my motorhome - I have a sense of added safety with the app allowing me to shut off the output some batteries don't allow that.. I also enjoy the heating function on these batteries.. the app however is very basic and uses cartoon figures rather than actual battery data.. but for me I'm able to turn on and off and monitor the charge and discharge rate of my batteries through the app which is helpful.. I have these batteries wrapped in welding blankets and battery bags for some increased safety - thus far I have had very little problems with these batteries usually just trying to run them in parallel sometimes you need to turn them off and back on to begin to operate in parallel.
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Reviewed in the United States on September 2, 2026 by Riley Mattson
Great value, easy upgrade to lithium in our Brinkley travel trailer
Size: 1 Pack
Set name: 165Ah Heating & Bluetooth（Group 31）
Arrived early and perfectly charged (54%) for a Lithium battery. Fit into existing Group 27/31 box on the trailer tongue. Fully charged in about 2 hours on shore power, haven’t tried charging with solar panels yet. Very happy with the product, app and installation was effortless!!
Reviewed in the United States on August 10, 2026 by BMUS
Great in use, but parallel setup has a hidden quirk
Size: 2 Pack
Set name: 100Ah Bluetooth（Group 27）
I run two of these 100Ah batteries in parallel (cross-connected, single ANL fuse) in my RV. Performance was solid on an extended trip — both batteries shared the load evenly. Issue: after sitting on shore power for ~2 months at 100%, I disconnected shore power and only one battery was discharging. The other sat at 100% SOC, 0.0A/0.0W, with the app showing "Normal" status the whole time — no fault flagged. This turned out to be Full Charge Protection: at 100%, the BMS disconnects the discharge path, and in a parallel bank the other battery reconnecting first can mask the stuck one indefinitely. I found this explained on solar/RV forums, not in LiTime's documentation — that's my main complaint for anyone running these in parallel or series. Fix: toggle discharge off/on in the app. LiTime support confirmed this is known behavior and shared two other fixes (60W load for 5 min, or 4-hour rest disconnect). Bottom line: good batteries, responsive support, but check both batteries' status before relying on a parallel bank that's been sitting fully charged for a while.
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Reviewed in the United States on September 18, 2026 by David Moore
Quality product with great customer service
Size: 2 Pack
Set name: 100Ah Bluetooth（Group 27）
My new electric motor was not doing well with my older lead acid batteries, so I upgraded to these. I had a little issue trying to get them to balance. I emailed Litime and they were a great help. I have been out four times for about 5 hours each time since I last charged them and they are still at 67% charge.
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Reviewed in the United States on September 13, 2026 by Scott Mc
Great set of Batteries for My Boat Lift
Size: 1 Pack
Set name: 100Ah Bluetooth（Group 27）
Great lightweight battery at a lower price found anywhere else.
Reviewed in the United States on August 10, 2026 by H2jOe
Good choice.
Size: 2 Pack
Set name: 100Ah Heating & Bluetooth（Group 24）
These batteries are being used to replace the LA batteries in our Travel Trailer. Installed along with a new Converter charger from WFCO. Batteries came at 50% charged. Batteries needed to be discharged before Converter would recognize as lithium. App is very straight forward and showing it will take a little over 8 hours to fully charge starting at 7%. The size fits perfect in the same space and the weight is over 50% lighter then the LA batteries. I'm very satisfied with my choice.
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Reviewed in the United States on July 10, 2026 by Patrick G