Battery Management / Charting option

Being an owner of Lenovo Thinkpad series, I know that there is an option under ThinkVantage where you can manually request the laptop to hold on the charging process until the battery has reached certain lower level(I set mine at 15%) of electricity remained.

I am just curious...has there been any other manufacturer who has done this feature? I can't seem to find it in either Dell or Fujitsu(which does surprise me as I do love the S6520).

 

seems like an incredibly pointless option. considering this may increase battery wear

 

Why would fewer charging cycles increase battery wear?

 

surely allowing it to discharge to 15% then charging it back up is more?

 

Seems to me you should do a little more research before providing grossly inaccurate information here.

 

i've been in this business longer than you thanks, random guy who has done 11 posts in his life.

 

Both of you please substantiate your reasoning.

I can see where Lenovo are coming from. The battery will slowly self discharge over time and each top-up charge may count as a charge cycle. Many notebook manufacturers have a pre-set threshold, above which the battery does not recharge. On the older Fujitsus (eg S6120) this was 90%. Samsung use ?97%. However, I would consider 15% to be quite a low threshold since that will be followed by a heavy recharge and would suggest for 50%.

Some notebook manufacturers (eg Sony) also have a user-adjustable maximum charge limit. Which all suggests that although this battery technology has been around for ~15 years, there is no consensus on the best way to preserve the battery performance. Or maybe some manufacturers want the batteries to wear so they can make a nice profit on selling replacements.

John