Description
Specifications
Lenovo ThinkPad T400S T410s T410si, Voltage 11.1V, Capacity 4000mAh/44Wh, Number of Cells/type Prismatic, Colour Black, Compatible part number FRU 42T4688, FRU 42T4690, ASM 42T4691
Compatible Devices
- Lenovo ThinkPad T400s
- Lenovo ThinkPad T410s
- Lenovo ThinkPad T410si
- ThinkPad T400s 2801
- ThinkPad T400s 2808
- ThinkPad T400s 2809
- ThinkPad T400s 2815
- ThinkPad T400s 2823
- ThinkPad T400s 2824
- ThinkPad T400s 2825
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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