BMS Per-Cell Cost?

What are people generally paying, per-cell, for a system which includes:

  • Charging
  • Protections (overcurrent, under-voltage, etc)
  • Active balancing

I’m curious about off-the-shelf systems vs DIY.

For systems based on 18650’s or 26650’s.

Not counting the cost of the cells, cell enclosures, wiring, etc. Just the circuitry.

Pricing for battery management systems (BMS) can vary depending on factors like quality, features, and the supplier. Off-the-shelf BMS solutions usually come with a higher price tag due to the convenience and assurance of reliability they offer. These systems typically integrate charging, protections (like overcurrent and under-voltage), and sometimes active balancing.

For a basic off-the-shelf BMS catering to 18650 or 26650 cells, you might expect to pay anywhere from $20 to $100 per cell, depending on the complexity and brand. This range covers a spectrum from simpler BMS setups to more advanced ones with additional features like Bluetooth connectivity for monitoring.

On the other hand, DIY solutions can be more cost-effective if you have the expertise and time to assemble and program them yourself. However, keep in mind that DIY options might lack certain features or robustness compared to commercial products unless you’re highly skilled in electronics and programming.

Overall, whether you opt for an off-the-shelf or DIY solution, it’s essential to consider factors like reliability, safety, and ease of integration into your project. Investing in a quality BMS can ultimately save you money in the long run by protecting your cells and ensuring optimal performance.

Yes, BMS is important for a lithium battery. A stable and excellent BMS could save lots of after-sales trouble. High Voltage BMS normally rates less than 20% of an ESS. It may be more reasonable to calculate BMS cost based on a KWh capacity. Normally, our BMS solution amounts to as low as 9.5$ per KWH, and yet can taking good care of various high voltage lithium batteries from applications such as UPS, C&I ESS, Home ESS or Solar ESS as well as Container ESS…

Indeed, a dependable Battery Management System (BMS) is vital for lithium battery health. Your insight into calculating BMS cost per KWh capacity is intriguing. At $9.5 per KWh, your solution offers excellent value while ensuring the care of diverse high voltage lithium batteries across various applications.

Thank you for sharing this valuable information!

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