Shorai LFX19A4-BS12 Lithium Starting/Cranking Battery

Shorai LFX19A4-BS12 is lithium battery designed for us as starting/cranking batteries in powersports vehicles like motorbikes, snowmobiles, ATVs and similar.

Shorai LFX19A4-BS12 features compact and rather lightweight design, simple use and maintenance, good starting characteristics, low self-discharge rate, affordable price etc.

However, one also has to know that Shorai LFX19A4-BS12 doesn't feature internal balancer and the use of SHO-BMS01 Lithium Battery Charger/Maintainer/Balancer is highly recommended.

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 Shorai LFX19A4-BS12 Features and Specifications

Shorai LFX19A4-BS12 physical dimensions are 3.39 x 5.83 x 3.46 inches (86 x 148 x 88 mm) - case size #4 and it weighs just 2.47 pounds (1.12 kg).

With 285 CCA, Shorai LFX19A4-BS12 is designed to replace lead-acid AGM starting batteries of ~19 Ah or less, if it can fit battery compartment.

Most often, Shorai LFX19A4-BS12 is smaller than the battery it is intended to replace - fortunately, self-adhesive foam spacers are included.

Since lithium iron phosphate batteries are safer than other lithium chemistries, Shorai LFX19A4-BS12 batteries are delivered fully charged.

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How to Charge and Maintain Shorai LFX19A4-BS12 Battery?

Shorai LFX19A4-BS12 is drop-in replacement for similar AGM batteries in powersports vehicles.

Its voltage should be kept between 13.1 volts and 14.8 volts - if the vehicle has an alternator to charge the AGM battery, it will also charge Shorai LFX19A4-BS12 battery.

However, when charging this battery directly, keep in mind:

- older lead chargers without automatic charging shut-off should never be used, for safety reasons,

- modern, automatic lead battery chargers that have automatic charging shut-off at 14.8 volts can be used, but after the charging is done, they must be disconnected at once.

shorai sho bms01

- the use of Shorai SHO-BMS01 Lithium Battery Charger/Maintainer/Balancer is highly recommended. First of all, Shorai SHO-BMS01 is NOT connected to the terminals, but to the special port on the battery, allowing it to check, balance and charge every battery cell individually, greatly increasing it operating life, safety and reliability.

shorai sho bmscbl12

And if Shorai SHO-BMS01 cables are too short, one can get 'extension' cable as well.

Note: Shorai LFX19A4-BS12 is excellent and affordable starting lithium battery, but it lacks built-in battery management system (BMS) that would monitor and balance battery cells individually. That is why these batteries tend to be slightly cheaper than similar starting batteries with full BMS installed.

If you need just one lithium starting battery, getting one lithium starting battery with BMS system can be cheaper than getting both Shorai LFX19A4-BS12 and Shorai SHO-BMS01.

If you need more than one lithium starting battery, getting one Shorai SHO-BMS01 and several Shorai LFX19A4-BS12 can save you some money, too.

On the other hand, plenty of users got Shorai LFX19A4-BS12 battery without Shorai SHO-BMS01 Charger/Balancer/Maintainer and are more than pleased with the purchase.

Often, it all depends on the used vehicle(s) and personal habits.


Long Story Short: If you are looking for strong, lightweight and reliable lithium starting battery for vehicle that requires 285 CCA or less, consider Shorai LFX19A4-BS12.

It is very light, can provide plenty of power, has very low self-discharge rate and is easy to maintain.

Also, it has very good starting features, when properly maintained and charged, in very cold conditions - just be sure to warm-up the battery by turning the lights on for short time.

Before the very first use/installation, be sure to read the manual/instructions that come with the battery - better safe than sorry :)

For more reviews and recommendations, check Shorai LFX19A4-BS12 and Shorai SHO-BMS01 Amazon links (links open in the new window).