Is this a drop-in replacement for a lead-acid battery?

Mostly. It gives 12.8V and 100Ah in a similar footprint but weighs much less. Your charger and any solar controller need a lithium (LiFePO4) profile, and the battery must not be charged below freezing.

What do the CAN, RS232 and RS485 ports do?

They let the battery report state of charge, voltage and alarms to compatible inverters and monitoring systems. Check that your inverter speaks the same protocol before relying on it.

How many cycles will it last?

Jmbatteries rates it at 6000 cycles with a 10-year design life. Real-world life depends on depth of discharge, temperature and charging habits.

Can I run a trolling motor or inverter on it?

Yes. It is a deep-cycle pack built for steady draws like trolling motors, 12V fridges and inverters. Match the inverter's continuous draw to the BMS current limit.

The listing cites IP54 through IP65, which is inconsistent. Treat it as splash-resistant and keep it in a dry, ventilated compartment rather than exposed to rain or bilge water.

The battery itself. Chargers, mounting hardware and cabling are generally not included, so plan for a lithium-compatible charger separately.

Where is the Jmbatteries JM 12V 100Ah Lithium Battery cheapest?

At JMBatteries, for $263.00, as of our latest check.

Jmbatteries JM 12V 100Ah Lithium Battery

Best price now

$263.00at JMBatteriesChecked Nov 2

Prices are checked against each store and labelled with when.

Visit JMBatteries

Jmbatteries JM 12V 100Ah Lithium Battery

Best price now

$263.00at JMBatteriesChecked Nov 2

Prices are checked against each store and labelled with when.

Visit JMBatteries

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Price facts

Last seen at $263.00 at JMBatteries on Nov 2.

Our take on the Jmbatteries JM 12V 100Ah Lithium Battery

The Jmbatteries JM is a 12.8V 100Ah LiFePO4 deep-cycle battery with a built-in battery management system. It is rated for 6000 cycles and a 10-year design life, and it weighs far less than a comparable lead-acid battery while needing no maintenance. CAN, RS232 and RS485 ports let it talk to inverters and monitoring gear, which most budget 12V lithium batteries lack. It suits solar storage, RVs, marine, trolling motors and backup power; against premium brands it is a value pick, and the brand's support network is smaller.

Best forRV and camper house batterySolar and off-grid storageTrolling motor powerBackup power for 12V devices

Pros

LiFePO4 chemistry rated for 6000 cycles
Built-in BMS protection
CAN, RS232 and RS485 communication
Light and maintenance-free next to lead-acid
Deep-cycle output for motors and inverters

Cons

Smaller brand with a thinner support network than big-name rivals
IP ratings listed vary, so check the exact model's sealing
Cold-weather charging limits typical of LiFePO4
Charger must be lithium-compatible to reach full capacity

Jmbatteries JM 12V 100Ah Lithium Battery prices at every store

JMBatteriesNew
Availability unknown
$263.00Checked Nov 2
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Jmbatteries JM 12V 100Ah Lithium Battery price history

Lowest price we've seen: $263.00 on Nov 2 at JMBatteries. Tracked across 1 store since Nov 2.

From JMBatteries

LiFePO4 battery pack with 12.8V 100Ah output
6000 cycle life and 10-year design life
Built-in BMS protection for safety
Lightweight and maintenance-free compared with lead-acid batteries
Suited to solar, RV, marine, off-grid, trolling motor, camper and backup power use
Communication via CAN, RS232, RS485

Guarantee: All JMBatteries products are strictly tested by a quality inspector before delivery; after the 30-day return period, faulty items may be handled under the JMBat
Returns: 30-day return policy from receipt; item must be unworn or unused, with tags and original packaging, plus receipt or proof of purchase; JMBatteries pays return s
Shipping: Free shipping on all orders (retail only); prices include DDP shipping, VAT/tax and customs duties, though some countries may require additional freight charges

About the Jmbatteries JM 12V 100Ah Lithium Battery

The Jmbatteries JM 12V 100Ah is a LiFePO4 (lithium iron phosphate) battery pack with a 12.8V nominal output and 100Ah capacity. It is a deep cycle battery with a built-in BMS (battery management system) for protection.

It is rated for 6000 cycles and a 10-year design life. The battery is lightweight and maintenance-free compared with lead-acid batteries.

It is used in solar energy storage, RV, marine and off-grid systems. It also suits trolling motors, campers, uninterruptible power supplies and backup power. Communication is available over CAN, RS232 and RS485.

Model: JM-L-12.8v 100ah
Battery type: LiFePO4 battery pack
Voltage: 12.8V
Capacity: 100Ah
Charge voltage: 3.65V
Discharge voltage: 2.5V
Cycle life: 6000 cycles
Design life: 10 years
Communication: CAN, RS232, RS485
Protection: Built-in BMS
Protection class: IP54, IP64, IP65, IP55
Certificates: MSDS, UN38.3, CE, RoHS
Applications: Electric power systems, solar energy storage, uninterruptible power supplies, energy storage, RV, marine, off-grid, trolling motors, campers, backup power

Questions and answers

Is this a drop-in replacement for a lead-acid battery?: Mostly. It gives 12.8V and 100Ah in a similar footprint but weighs much less. Your charger and any solar controller need a lithium (LiFePO4) profile, and the battery must not be charged below freezing.
What do the CAN, RS232 and RS485 ports do?: They let the battery report state of charge, voltage and alarms to compatible inverters and monitoring systems. Check that your inverter speaks the same protocol before relying on it.
How many cycles will it last?: Jmbatteries rates it at 6000 cycles with a 10-year design life. Real-world life depends on depth of discharge, temperature and charging habits.
Can I run a trolling motor or inverter on it?: Yes. It is a deep-cycle pack built for steady draws like trolling motors, 12V fridges and inverters. Match the inverter's continuous draw to the BMS current limit.
Is it waterproof?: The listing cites IP54 through IP65, which is inconsistent. Treat it as splash-resistant and keep it in a dry, ventilated compartment rather than exposed to rain or bilge water.
What is in the box?: The battery itself. Chargers, mounting hardware and cabling are generally not included, so plan for a lithium-compatible charger separately.
Where is the Jmbatteries JM 12V 100Ah Lithium Battery cheapest?: At JMBatteries, for $263.00, as of our latest check.