u/Beelzebub-damuggle

Hello,

I bought a used Dell Precision 5540 that’s performing well (minor turbo-boost and CPU temperature spikes on Fedora). The main issue is the battery.

• Original design capacity: 56 Wh
• Current capacity: ~19 Wh
• Energy draw: ~9 W with multiple tabs/programs, battery lasts ~30 minutes
• Under heavy load (games or local LLM) it spikes to 30+ W (since I have also quadro t2000)

Would upgrading to a 97 Wh battery give me at least ~5 hours of light use? If with the new battery I would get 2 hours or less, it’s not worth buying.

Any experiences or estimates from people who upgraded the 5540 or similar laptops would be appreciated.

Thanks.