DNP has talented engineers and battery experts to answer any and all frequently asked questions you might have over the course of your switch to lithium.
In this section we have compiled Lithium-ion battery facts, frequently asked questions, and tutorials. We want to help you understand our batteries and how to implement them in a system that's right for you.
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The BMS protects the lithium cells from getting damaged in several scenarios.
1. From low or over voltage, low or over temperature, and when there is an overcurrent happened in the system, The BMS will shut off the battery to protect the li-ion cells and the user from unsafe operating conditions.
2. Some specified BMS keep the feature of communications like CAN Bus, LIN Bus, I2C, UART, RS485.
3. BMS also keeps all the cells in balance. At the top of each charge cycle, the BMS reduces the charging rate in cells that have been topped off first, letting the rest of the cells catch up. This ensures that the cells are always in balance and maintains the quality and efficiency of the pack.
The rate of discharge is how fast you are pulling power from a battery. It’s important to take this into account as most traditional lead acid batteries have a 20-hour rate. That means the advertised capacity in amp hours is based on the fact that you will pull the power out slowly over 20 hours. If you discharge the battery in 5 hours, you will get less energy out of the battery than you would at 20 hours.
Whereas, Li-Ion batteries can deliver their advertised power, even if you discharge them in one hour, and discharge efficiency still can be higher than 95%.
Waterproof really depends on battery mechanics. Check your battery label, data sheet or user manual to find ingress level. Anyway, note water and electricity are a bad combination. Prolonged exposure to a high-moisture environment may cause water to penetrate the battery and cause irreversible damage. Like with most electronics, do not submerge a Li-Ion battery.
Choose a waterproof seal greatly can reduce the overall risk in many marine or high humidity environments.
Do not mix old and new batteries. Doing so will reduce overall performance and even damage your battery. In a battery bank, all batteries should keep same level on voltage, internal resistance and capacity, whether in series or parallel.
We highly recommend clients to install their Li-Ion batteries at one time.
Most of Li-Ion batteries are designed as deep cycle, traction and light motive power application. Never uses these Li-Ion batteries to start engines.
Make sure you are using a specified Li-Ion battery designed for engine cold cranking. If not, you will damage your Li-Ion battery and even cause fire, explosion, property loss, or body injury.
Use only specified and qualified Li-Ion charger to charge Li-Ion battery. Read battery’s charge instructions or user manual for details if possible. Do not expose and charge Li-Ion battery under raining, or snowing.
The recommended storage temperature range is -20°C to 35°C for above 3 months storage. We recommend bringing Li-Ion battery to 60% - 80% state of charge (SOC) and then disconnecting it from load completely for storage. Note you need to check your battery every three months and recharge it immediately once its SOC is lower than 20% in storage.
Use a volt meter probes to connect your battery’s Positive/+ and Negative/- terminals and read the volt. To our Bluetooth battery, and you can monitor its voltage through our free App.
Our Li-Ion chemistry is designed to last 500 – 1,000 cycles, at which point the battery will still hold 70% to 80% of its initial rated capacity.
Our LiFePO4 chemistry is designed to last 2,000 – 3,000 cycles, at which point the battery will hold 70% to 80% of its initial rated capacity.