Re: Advice on getting a new laptop battery
I know almost nothing about the science behind batteries. This is an anecdote only.
I bought an Acer Aspire One years ago, which came with a 3-cell battery. I wanted more battery life, so I bought a 9-cell third-party battery from an e-bay seller in Hong Kong. A year later, I bought a newer model Aspire One that also came with a 3-cell battery.
Both the genuine 3-cell Acer batteries are dead. The computer won't run for even a second with these batteries, even if you try to charge them. The no-name 9-cell battery is still going strong. The 9-cell is nearly four years old. The 3-cells died in less than two years each.
Buying a no-name battery from a high-rated seller in Hong Kong, that costs less than a lower-capacity genuine battery, may be the best option!
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.