Description
Specifications
10.8V 56Wh 6-Cell Battery for Lenovo ThinkPad R400 R61 R61i T400 T61 T61p (P/N: FRU 42T4548 FRU 42T5262 FRU 42T5264 ASM 42T5262 41U3198 42T4547)
Voltage 10.8V,
Capacity 5200mAh/56Wh,
Number of Cells/type 6,
Colour Black,
Compatible Part Numbers
- 41U3198
- 42T4547
- 42T4652
- 42T5263
- ASM 42T5265
- FRU 42T4548
- FRU 42T5262
- FRU 42T5264
- FRU 42T4677
- 42T4644
- 42T4531
- 43R2499
Compatible Devices
- ThinkPad R400
- ThinkPad R400 7443
- ThinkPad R61 (14.1 widescreen)
- ThinkPad R61 7732
- ThinkPad R61 7733
- ThinkPad R61 7734
- ThinkPad R61 7735
- ThinkPad R61 7736
- ThinkPad R61 7737
- ThinkPad R61 7738
- ThinkPad R61 7742
- ThinkPad R61 7743
- ThinkPad R61 7744
- ThinkPad R61 7751
- ThinkPad R61 7753
- ThinkPad R61 7754
- ThinkPad R61 7755
- ThinkPad R61i (14.1 widescreen)
- ThinkPad R61i 7732
- ThinkPad R61i 7742
- ThinkPad T400
- ThinkPad T400 2764
- ThinkPad T400 7417
- ThinkPad T61 (14.1 widescreen)
- ThinkPad T61 1959
- ThinkPad T61 6377
- ThinkPad T61 6378
- ThinkPad T61 6379
- ThinkPad T61 6480
- ThinkPad T61 6481
- ThinkPad T61 7658
- ThinkPad T61 7659
- ThinkPad T61 7660
- ThinkPad T61 7661
- ThinkPad T61 7662
- ThinkPad T61 7663
- ThinkPad T61 7664
- ThinkPad T61 7665
- ThinkPad T61p (14.1 widescreen)
- ThinkPad T61u (14.1 widescreen)
Tips to Extend Your Battery’s Lifespan
1. Keep it cool – heat is the biggest cause of battery wear, so avoid leaving your Lenovo laptop in direct sun, a hot car, or on soft surfaces that block the vents.
2. Avoid charging to 100% every time – many Lenovo laptops have a battery conservation mode in Lenovo Vantage that limits charging to around 80%, which can roughly double your battery’s usable lifespan.
3. Don’t let it run flat – regularly draining the battery to 0% wears it out much faster than topping up before it gets critically low.
4. Store at around 50% charge – if you won’t be using the laptop for a few weeks or more, store it half-charged in a cool, dry place rather than fully charged or fully empty.
5. Go easy on fast charging – rapid chargers generate extra heat, so standard charging (especially overnight or while idle) is gentler on the battery over time.










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