As lithium iron batteries become the industry standard for portable power, it's more important than ever to understand how to maintain them properly. Whether you're using a power tool, an EV, or a Carku jump starter, good battery care ensures safety, longevity, and performance.

Lithium iron batteries are pretty much everywhere these days—they've become the go-to choice for car jump starters. And honestly, if you want to get the most out of your gear, whether it's a power tool, your EV, or that Carku jump starter sitting in your trunk, you really need to know how to take care of these batteries. Trust me, a little proper maintenance goes a long way in keeping things safe, making them last longer, and ensuring they actually work when you need them most.

What Companies Make Lithium Batteries?

The global lithium battery industry remains dominated by Asian manufacturers:

• 1.CATL (China) - Maintains global leadership position.
• 2.BYD (China) - Strong presence in both EVs and battery manufacturing.
• 3.LG Energy Solution (South Korea) - Major supplier for international automakers.

Application in Jump Starter Market Assessment

When evaluating manufacturers for high safety emergency jump starters, the industry screening standards for BMS, battery module packaging, and complete product design capabilities become critical.

After understanding jump starter manufacturing, their applications span across automotive cars, trucks, motorcycles, and marine vessels. As a professional LiFePO4 battery jump starter manufacturer, Carku experts provide comprehensive guidance from manufacturing through usage to maintenance.

Carku Manufacturer Evaluation Criteria In Jump Starters

Here it’s strictly follow the four standards.

R&D Capability - Demonstrated by successful material transition

With a team of more than 100+ professional technicians and engineers, Carku conducts cutting-edge research and development for Li-Fe, Li-Po, and Na-ion batteries ranging from 10,000 mAh to 352,000 mAh in capacity for use in vehicles from cars to trucks.

OEM/ODM Experience - Essential for automotive aftermarket

Carku is a globally recognized ODM/OEM manufacturer specializing in automotive jump starters and related lithium battery products. The company provides comprehensive customization services to meet diverse customer requirements and maintains strict confidentiality for all client projects. Our products carry international certifications including UL, CE, FCC, and other standards required for global distribution.

BMS

Modern BMS technology provides comprehensive cell-level monitoring and control, optimizing utilization efficiency, preventing dangerous discharge and overcharge conditions, continuously assessing battery health status, and significantly extending overall battery lifespan.

Battery cell

Li-Po Battery(Lithium Polymer)

CARKU manufactures Lithium Polymer (Li-Po) batteries in a wide range of parameters, configurations, and sizes for remote control and electronic applications. These Li-Po batteries incorporate four fundamental technologies including extreme low-temperature resistance, fast charging, high voltage capability, and custom shape design.

LiFePO4 Battery(Lithium Iron Phosphate or LFP batteries)

Lithium Iron Phosphate (LiFePO4/LFP) batteries are engineered specifically for high-power applications including electric vehicles, heavy-duty trucks, forklifts, and energy storage systems. These batteries feature deep-cycle capability and exceptional longevity, making them an ideal replacement for traditional lead-acid batteries. 

Additionally, LFP batteries offer superior environmental sustainability, excellent high-rate discharge performance, and robust low-temperature operation. Custom form factors are available, and all batteries can be integrated with advanced BMS for optimal performance and safety.

Na-ion Battery(Sodium-ion battery)

CARKU Sodium-ion (Na-ion) batteries deliver superior safety performance with enhanced thermal stability and material safety. These Na-ion batteries incorporate advanced technologies including exceptional capacity retention at -20℃, reliable operation at high temperatures up to 80℃, non-toxic composition, and environmentally sustainable design.

How Do I Maintain a Lithium Battery?

The Carku jump starter JS-558 12V with air compressor is powered by a high-performance lithium iron phosphate (LiFePO₄) battery, known for its long cycle life, safety, and efficiency. However, even the most advanced batteries require proper care.

 

To maximize the lifespan of your JS-558, avoid leaving it unused for long periods. Idle batteries degrade over time, and without periodic cycling, the internal chemistry may deteriorate.Carku recommends performing a maintenance cycle every 6–12 months when the jump starter is not in regular use:

Initial Use and Activation:

1.Fully charge the unit to 100% state of charge (SoC) before first use.

2.Use the device normally until it reaches approximately 20-30% remaining capacity.

3.Recharge to 50-80% for long-term storage.

Long-Term Storage Preparation:

Charge the unit to approximately 50-60% state of charge (SoC).

Store in a cool, dry environment away from direct sunlight.

Check and top up to 50-60% every 3-6 months during storage periods.

Lithium Battery Best Practices:

Avoid complete discharge (0% DoD is harmful to lithium batteries).

Maintain 50-60% SoC for long-term storage to preserve battery health.

Avoid keeping the battery at 100% charge for extended periods.

Store at room temperature or cooler when possible.

Recharge immediately after use to prevent deep discharge damage.

How Do I Charge a Lithium Iron Battery?

For example,CARKU JS-558 jump starter with air compressor,using the provided USB to USB-C cable, connect the USB-C end to the charging port on your JS-558 and plug the USB end into any powered USB charger (30W recommended for fast charging). A charging indicator will show when the battery is fully charged.
 

So in 2025, when manufacturing a customized car jump starter, don't just focus on which features are the most advanced—also consider who has the manufacturing expertise behind the battery technology. Partnering with established lithium battery jump starter manufacturers like CARKU, who possess the engineering experience to design and produce custom batteries equipped with cutting-edge innovative features, will help you achieve the ideal balance of price and performance in your jump starter solutions.