02-13-2011 10:41 PM
HI Gurus, I have a T43 1871 FU1 Model which is working fine so far. Recently my Original Battery is seems to be very weak, i thought to purchase a new battery. First tried with Lenovo, i heard that there are no battery replacements available for these models. Then i purchased an AGPTEK (Sanyo) Battery from Amazon.
Battery Details: Status : No Activity / Remaining Percentage : 100% / Remaining Capacity : 47.20Wh / Full Charge Capacity : 47.52Wh / Current: 0.00 A / Voltage : 12.39V / Wattage : - / Temperature : 22 c / Cycle Count : 1 / Manufacture Name : SANYO / Manufacture Date : 2010-09-19 / FRU Part Number : IBM-COMPATIBLE /Device Chemistry: Li-Ion / Design Capacity : 47.52Wh /Design Voltage : 10.80V
Problem: With AC Power system works perfectly fine. The Moment when i remove the power from AC and try to work with battery power "SYSTEM FREEZES" IMMEDIATELY.I tried to change batteries 3 times from the vendor.
I also updated the latest Bios - 1.29(70ET69WW) and tried with all other Power Scheme. I tried to search entire forums. With my Old Battery system works fine too. Also tried to diagnostics with Lenovo Toolbox, where test device functionality- Passed.
I appreciate any help to resolve my problem. Thank you
02-14-2011 02:39 AM
Hi and welcome to the forum!
As you can also see, the culprit is the aftermarket battery. These batteries are no good in my stance, and shouldn't be used. If I were you, I would return it and get a genuine from eBay or try to find one from the Marketplace of ThinkPads forum.
Hope this helps.
Maliha (I don't work for lenovo)
ThinkPads:- T400[Win 7], T60[Win 7], IBM 240[Win XP]
IdeaPad: U350Apple:- Macbook Air [Snow Leopard]
02-15-2011 06:23 PM
Thanks for the response.As i mentioned, first tried with lenovo market place.I heard there is no replacement battery for this T43 1871 FU1 model.Then only i tried with all other vendors.Most of people in the forum discussed about buying battery from Amazon/Ebay as a second alternative.
Important Point: When i troubleshooted the New Sanyo Battery(AGPTEK) with LENOVO Tool Box, it PASSED the Test.And it says new battery is IBM-Compatible.And the battery charges fully and shows 100%.
Still i suspect some compatibility issue , even i updated Bios to the latest version(1.29) and also tried with different Power Scheme.Updated POWER MANAGEMENT to the latest version from lenovo.
ISSUE: THE MOMENT when i unplug the AC power, System hangs with new Battery power.
Kindly someone give me some technical inputs.I will really appreiate your response.Thanks in advance.
02-15-2011 06:43 PM
I've owned ThinkPads that were behaving in such a manner with genuine batteries that were starting to go bad.
You don't need a battery specifically designed for 1871-FU1. Whole T4x/R5x generation of ThinkPads share the design.
Although there are none available at the Outlet right now, bookmark the page and keep on checking:
Defective battery of any kind will eventually damage the charging circuit on the motherboard, so you're better off running the machine without a battery until you obtain a proper replacement.
02-15-2011 07:35 PM
Thank you very much for your response.I will defintely keep a look on the web site you have mentioned.
Problem is which ever vendor, im ordering these batteries , almost all the vendors sending the same Sanyo(AGPTEK) Batteries as replacement for this FRU P/N 92P1087.This is my 3rd attempt made with three different vendors.All the three times the same result.
Any help will be deeply appreciated.. thank you
02-15-2011 08:12 PM
A quick feebay search got me this:
I'm not affiliated with the seller in any way, proceed at your own risk.
02-15-2011 08:55 PM
You're very welcome. Always happy to help a fellow ThinkPad owner if I can...