I purchased Lenovo ThinkPad Edge E431 two years ago. The laptop works ok but the battery needed replacement before expected. So, I searched on Amazon for a replacement battery compatible with the laptop model I have since purchasing a battery directly from Lenovo costs $99.99 (now on sale for $85.99) which is really ridiculous. I was able to find the Lenovo battery on Amazon for $70.87 and most likely will end up ordering it.
I came across Nb-battery 10.8v which costs only $24.99. I thought it was a great deal and purchased it. Once I received it, I threw away the old battery which I should have kept.
The Nb-battery works ok with exception to one issue. When it is fully charged, the laptop runs on it for about 3-hour period with normal use. However, when running CPU intensive applications, it drains faster which is expected.
The issue I’m having with this battery is that, when it reaches ~25%, without any warning, the laptop powers down as if a hard reset was used. Basically, it is not a normal shut down wherein the laptop saves settings and powers down.
To get around this issue, I usually plug in the charger when the battery is around 30% capacity to prevent the sudden power down from happening.
Even though Lenovo original battery costs four times the price of the Nb battery, I’m planning to buy one to replace the low quality Nb battery I mistakenly purchased.
Kindly, do not make the same mistake I made. Always read products reviews before placing an order.
