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Posts: 6
Registered: ‎07-25-2011
Location: Crystal Lake, IL
0 Kudos

E420s battery problems

I've seen this is a common trend going around, however I have not seen any fixes for it yet. On the e420s, I have had two main battery problems with respect to other owners.


The first is that the battery life is unbelievably short. I know that lenovo advertised 7 hours which means I should probably expect 4 or so when doing basic tasks -- I've seen many user and professional reviewers of the laptop post that they get 5 hours of battery when using 60% brightness and reloading webpages, even watching videos. However, I get approximately two hours of battery when everything is configured at the lowest settings --- brightness 0%, CPU on lowest, fan speed on passive, internet turned off, no java or any entertainment programs running - I get about 2 hours when the only program running is Word. 


The next is a problem that started about a month ago. 4 or 5 times in the past month when running on battery power, the battery will shoot from about 45% to 6% instantly. It's always these two values specifically. It turns the 2 hours of battery into a little over 1. 


Lenovo sent out the battery firmware update in October which I performed. In doing so, the battery life actually hit 4 and a half hours for a few days. I thought that that was the fix. But after less than a week later, the battery went back to normal. I tried reinstalling the firmware update but it did no good.



Punch Card
Posts: 35
Registered: ‎01-02-2012
Location: FL
0 Kudos

Re: E420s battery problems

call the lenovo **bleep**s

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Posts: 6
Registered: ‎07-25-2011
Location: Crystal Lake, IL
0 Kudos

Re: E420s battery problems

Does anyone have a specific number I can call them at regarding this problem? My laptop is still in warranty. Their layout for customer service gives me a headache. 

What's DOS?
Posts: 1
Registered: ‎01-13-2012
Location: Hong Kong
0 Kudos

Betreff: E420s battery problems

im having the exact same problem also. Got any fix for that?