How to Charge a Lithium Polymer Battery

RC Lithium Polymer Battery of LiPol Battery Co., Ltd

We are an ISO 9001 qualified lithium polymer battery factory in China, with more than 20 years of experience producing and selling lithium polymer batteries. We are committed to providing you with accurate and useful information to ensure the service life and safety of your lithium polymer batteries. On this page, you will learn how to charge a lipo battery one step by step, and you will know why our batteries stand out in the market. Visit our website and get a lithium polymer battery solution.

Lithium Polymer Battery Charge Guide

Step 1. Choose the right charger: Select a charger specifically designed for lithium polymer batteries to ensure compatibility and safety. Our factory offers a range of top-quality lithium polymer batteries, but we do not sell chargers. If you need chargers, you can purchase them on Alibaba or eBay. (you may be interested in how to choose a lithium polymer battery charger)

Step 2. Check your battery: Before charging, inspect the lithium polymer battery for any signs of damage, swelling, or leaks. If you notice anything unusual, refrain from charging and contact our support team for assistance.

Step 3. Balance charging: Always use a balance charger to ensure that each cell within the lithium polymer battery is charged evenly. This prevents overcharging and extends the life of your battery.

Step 4. Set the correct charging rate: The charging rate should be set according to your battery’s capacity (mAh). As a rule of thumb, for a lithium polymer battery, charge at a rate of 1C (1 times the capacity). For example, if your battery is 1500mAh, set the charging rate to 1500mA. But in most cases, we recommend charging the lithium polymer battery at 0.2C-0.5C, it is better for the battery life.

Step 5. Monitor the charging process: Keep an eye on the lithium polymer battery during the entire charging process. If you notice any unusual behavior, such as overheating or swelling, stop charging immediately and consult our experts.

Step 6. Unplug and store safely: Once the lithium polymer battery is fully charged, unplug it from the charger and store it in a fireproof container or LiPo safe bag until it’s ready for use.

How long lithium polymer battery fully charged?

The time it takes to fully charge a lithium polymer battery depends on the battery’s capacity, its current state of charge, and the charging rate you are using.

As a general rule, you can calculate the estimated charging time using the following formula: Charging Time (hours) = (Battery Capacity in mAh) / (Charging Rate in mA)

For example, if you have a 5000mAh lipo battery and you charge it at a rate of 1C (which would be 5000mA or 5A), the estimated charging time would be:

Charging Time = (5000mAh) / (5000mA) = 1 hour

Please note that this calculation provides an approximate charging time. In practice, the actual charging time might be slightly longer due to inefficiencies in the charging process and the balancing of individual cells. It’s important to monitor the charging process and use a balance charger specifically designed for lithium polymer batteries to ensure safety and prolong battery life.

When is a lithium polymer battery fully charged?

A lithium polymer battery is considered fully charged when it reaches its peak voltage per cell. For most lipo batteries, the peak voltage per cell is 4.2 volts. A lipo battery pack typically consists of multiple cells connected in series, so the overall voltage of the battery will be a multiple of 4.2 volts depending on the number of cells it has.

For example:

A 1S (single-cell) lithium polymer battery is fully charged at 4.2 volts.
A 2S (two-cell) lithium polymer battery is fully charged at 8.4 volts (4.2V x 2).
A 3S (three-cell) lithium polymer battery is fully charged at 12.6 volts (4.2V x 3).

It’s essential to use a balance charger designed for llithium polymer batteries when charging. A balance charger will monitor each cell’s voltage and ensure they all reach the correct voltage of 4.2 volts per cell, preventing overcharging and maintaining the overall health of the battery.

Why choose our lithium polymer batteries?

We are a leading designer & manufacturer of Lithium Polymer Battery battery & packs in Shenzhen China and was founded in 2002. The LiPol Battery Co., Ltd team has been focusing on providing great Lithium Ion Polymer Battery Solutions for product development.

Quality Assurance: We adhere to strict manufacturing standards and rigorous testing processes to ensure that our LiPo batteries deliver exceptional performance and reliability.

Custom Solutions: Our factory offers a wide range of battery capacities, sizes, and configurations, allowing us to cater to your specific requirements and applications.

Competitive Pricing: We pride ourselves on providing high-quality LiPo batteries at competitive prices, making them accessible to a broader range of customers.

Expert Support: Our knowledgeable team is available to answer any questions you may have about our products, battery care, or charging procedures.

How to order lithium polymer batteries?

1. Send your Requirements
Find us through the sidebar contact form, send us your requirements for the lipo battery, such as dimensions(thickness x width x length), voltage, capacity, max working current, protection circuit module(PCM), wires request, thermistor(NTC), connector type, etc. We will recommend the best suitable rechargeable lithium polymer battery for you.
2. Quotation
When we receive your inquiries, we will reply to you within 12 hours. We mainly communicate by email.
3. Order Process
When you are ready to place lithium polymer battery orders with us, we will confirm the battery models, quantities, prices, and other details, and send you an invoice for payment. We accept PayPal payments, credit cards payment, and bank transfer payments. Then, we will arrange your order. The lead time depends on specific orders.
4. Shipment
When we finish the lithium polymer batteries, we will ship them via DHL/UPS/FedEx air shipping, it is safe and fast. And, we will send the tracking number to you when we get it.
5. Warranty
Our warranty for the lithium polymer battery is one year after the sale. (Refund or resend batteries)
Range of warranty: There is low voltage, expansion, or leakage with the correct use of the lithium polymer battery in the warranty period.

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