Description
Specifications
PH09 593573-001 Battery for HP ProBook 4520S 4320S 4720S 4420S 4525S 4325S (10.8V 84Wh)
Voltage 10.8V,
Capacity 7800mAh/84Wh,
Number of Cells/type 9,
Colour Black,
Compatible Part Numbers
- 593573-001
- PH09
Compatible Devices
- ProBook 4320S
- ProBook 4321S
- ProBook 4520S
- ProBook 4521S
- ProBook 4325S
- ProBook 4425S
- ProBook 4420S
- ProBoo 4421S
- ProBook 4720S
- ProBook 4326S
- ProBook 4525S
- 320
- 321
- 325
- 326
- 420
- 421
- 620
- 621
Tips to Extend Your Battery’s Lifespan
1. Keep it cool – heat is the biggest cause of battery wear, so avoid leaving your HP laptop in direct sun, a hot car, or on soft surfaces that block the vents.
2. Avoid charging to 100% every time – HP Battery Health Manager (in the BIOS or HP Support Assistant) lets you cap charging around 50-100% depending on how you use the laptop, which can meaningfully extend 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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