Xiaomi’s 200W charging has a major effect on battery degradation


TL;DR

  • Xiaomi has revealed that its 200W charging answer drains battery capability at a vital price.
  • Roughly two years of charging and discharging cycles will outcome within the battery degrading to simply over 80% capability.

Xiaomi introduced 200W wired charging final month, making for a big step above even ultra-fast 120W options already accessible in a few telephones. The producer says this answer is ready to prime up a 4,000mAh battery in simply eight minutes, but it surely seems that this comes at a long-term price.

Xiaomi posted a Q&A on its Weibo account immediately, and one of many questions involved the affect of 200W charging on battery well being over time. It seems that 800 charging and discharging cycles at 200W ends in the battery degrading to “above 80%” of its unique capability.

800 cycles corresponds to simply over two years, so which means a cellphone with a 4,000mAh battery will successfully have a 3,200mAh battery (or a little greater than this) after two years of charging through this technique. Meanwhile, a machine with a 5,000mAh battery will primarily have a ~4,000mAh battery after two years of 200W charging.

That’s roughly similar to Oppo’s 125W charging solution introduced final yr. Oppo stated on the time that 800 cycles with 125W charging will drop the battery capability to 80%. The agency previously noted that its already brisk 65W answer solely dropped the battery capability to 91%.

More studying: Charging habits to maximize battery life

For what it’s price, Xiaomi claimed that the Chinese regulatory customary for battery degradation is that 60% capability must be left after 400 cycles. But that looks like an absurdly low bar for smartphone battery well being when persons are holding onto their units for longer than ever. And that customary would imply a cellphone with a 4,000mAh battery could be lowered to 2,400mAh capability after roughly a yr of charging. That’s barely sufficient for half a day, with trendy telephones providing 5G, excessive refresh price screens, and different power-hungry options.

Nevertheless, we hope smartphone firms maintain off on implementing extra 120W to 200W charging options till they’ve found out a method to enhance battery degradation. Until then, immediately’s 40W, 55W, and 65W options usually ship quick speeds with out compromising battery well being to the identical extent.




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