Allion 12V 205Ah Lifepo4 Battery W/Bluetooth

Allion 12V 205Ah Lifepo4 Battery W/Bluetooth


Brand: Allion

Reference No. AL12205BT



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ALLiON LiFePO4 batteries:

The ALLiON AL12205BT Lithium-iron battery is a high performing 12V Deep Cycle battery with with Bluetooth technology and a capacity of 205 Amp Hours (Ah). Suitable for RV & leisure applications, the ALLiON range of Lithium batteries are much lighter than comparable lead acid and can last up to 4 times as long. They are also safe to use thanks to the integrated battery management system. 

ALLiON batteries are designed with advanced technologies to provide your application with the best, most reliable power. They have an integrated BMS system (battery management system) which manages the battery status and actively protects the battery if the voltage, current or temperature are outside of the designed operating parameters. ALLiON also takes battery technology to the next level by equipping selected batteries in the range with Bluetooth technology so you can monitor your battery's status via an App on your smart device.

The rated cycle life of ALLiON lithium batteries is significantly greater than AGM batteries. They will deliver between 2000 & 4000 cycles depending on the depth of discharge (DoD), compared to an AGM battery which is rated at 300 to 700 cycles for the same DoD. This superior cycle life lowers the cost of ownership over the battery lifetime and also reduces the number of battery replacements.

The high charge acceptance of LiFePO4 technology means that a fully depleted battery can be recharged in less than 3 hours which means less time spent waiting for the battery to charge and more time for your adventure!

Features & benefits: 

Onboard battery management system- The onboard battery management system with ALLiON batteries protects the battery if voltage, current or temperature vary outside the designed operating range.

Fast recharge with overcharge protection- ALLiON batteries' flat discharge curve full power for an extended period of time. The higher charge acceptance of LiFePO4 technology means that even a deeply discharged battery can be charged safely and efficiently in less than 3 hours. 

Bluetooth status monitoringPrevent unexpected surprises on the road by checking the health of your battery on your smart device via bluetooth technology.

Partial state of charge (PSoC)- Lead acid batteries are happiest when they are fully charged (100% SoC). Operating at PSoC increases the rate of sulphation which directly reduces battery performance and cycle life. Sulphation is not an issue for LiFePO4 technology so performance and cycle life is not effected when operating in a PSoC. This means ALLiON batteries will still deliver all of their benefits in applications where they are being charged by variable energy sources like wind or solar.

Lightweight- ALLiON batteries' high energy density delivers around 60% weight reduction compared to equivalent AGM lead acid batteries. The lower weight means safer manual handling and a lower overall weight of your energy storage. 

Safe & stable LiFePO4 technology- LiFePO4 technology is well regarded for it's thermal & chemical stability. You can rest assured knowing that ALLiON batteries and safe and durable, fully capable of delivering many years of reliable operation. Unlike lead acid batteries which need external ventilation to prevent explosive gases accumulating, LiFePO4 does not vent any gas during operation. AlliON batteries can be safely mounted on their side and installed in compact spaces without having to worry about venting. LiFePO4 technology has high thermal stability which means, unlike most other lithium based batteries, it is highly resistant to thermal runaway.


Normal Specification




Nominal Voltage


Nominal Capacity




Cycle Life (DOD – 80% under controlled conditions)

≥ 2000 Cycles

Standard Charge Specification (Lithium profile charger required)

Battery Charge Temperature

̴ 50°C

Normal Charge Voltage CV/CC*

14.40 ̴ 14.80V

Standby (Float) Voltage

13.60 ̴ 14.0V

Maximum Charge Current

100A @ 25°C

100A @ 25°C

150A @ 25°C

Recommended Charge Current for Maximum Life




Standard Discharge Specification

Battery Discharge Temperature

-20 ̴ 60°C

Battery Output Voltage Range

11.00 ̴ 14.80V

Maximum Discharge Current

100A @ 25°C ± 5°C

100A @ 25°C ±5°C  



Discharge Cut-off Voltage

≤11.0V                        (205AH Battery <10V)

Circuit Protection

The battery is supplied with a LiFePO4 Battery Management System BMS that can monitor and optimize each single prismatic cell during charge & discharge, to protect the battery pack from overcharge, over discharge & short circuit. Overall, the BMS helps to ensure safe and accurate operation of the battery.

Over-Charge Protection

Over-charge Protection Per Cell

3.75V ± 0.03V

Over-charge Release Per Cell

3.60V ± 0.05V

Over-charge Release Method

Discharge below reset voltage

Over-Discharge Protection

Over-discharge Protection Per Cell

2.50V ± 0.05V

Over-discharge Release Per Cell

2.80V ± 0.10V

Over-discharge Release Method

Begin charging

Over Current Protection

Discharge Over Current

100-120A for 30s

100-120A for 30s 

Charge current protection reset

Charge or auto reset after 1 min

Short circuit protection

Do not short circuit the electrodes

Over Temperature Protection

Battery Discharge Over Temperature

Protection to 65°C ± 5°C

Reset at 50°C ± 5°C

Minimum charge Temperature

Protection to -10°C ± 5°C

Reset at 0°C ± 5°C

Mechanical Characteristics


Length:       307mm                           330mm


Width:      169mm                             172mm


Height:      211mm                              220mm



Approx 12.5 Kg

Approx 15.0 Kg

Approx 26.0 Kg

Storage Information

Temperature & Humidity Range

≤ 30 days -20°C ̴ +60°C,  5 ̴ 75% RH

≥ 30 days -10°C ̴ +45°C,  5 ̴ 75% RH

Self-discharge Rate

≤ 3% Per Month

ALLiON 12V 205AH spec sheet-

ALLiON 12V 205AH warranty guide-