TREE.NB New 9 Cell 7800mAh Laptop Battery for Dell Studio 1735 1736 1737 KM973 RM791 US

It was a perfect fit for my laptop. Came with 50% charge and charged to 100% in 40 minutes.

It's fits very well in my Acer nitro 5 laptop battery holds at least 4 hours for non-aggressive screen time but when it comes to gaming it's a totally different ball game it lasts about an hour and a half but it also depends on what game you're using I was playing Sims and the battery didn't last more than an 2 hours and then when I played wow aka war of Warcraft it lasted about a good hour and 1/2 on low FPS. But if you're using it for non-gaming it does last for 3 to 4 hours.

Fit just like it should good value for the money good battery life

I have an Acer Aspire 5253, she's really old and needed a battery. I bought this one, thinking I could get a bit more than 2 years of life out of it. However, according to HWMonitor, this battery is already 16% dead, and I haven't even had it for very long. Now, I could've failed to properly condition the battery, but still. Hope it still last for more than a year.

I never replaced my battery in my envy x30 15mbp001dx, its 10 years old. The ram, hdd and battery all had to be replaced, I could only use it plugged in but after switching to this battery and fully charging it I tested it by installing multiple apps & games, then went to class and it only went down to 80% in 6 hours of heavy use. Great battery

Easily fit into my HP ENVY 360. I will see how long the charge lasts. Easy install

Excellent. Easy replacement. No issues.

I purchased this battery as a replacement for my Acer Nitro 5. After installation, it initially appeared to work correctly and charged to 100% without any issues. However, I later discovered a serious defect. When the laptop is left plugged into the AC charger, the battery slowly discharges on its own and reaches 0% within 3–4 weeks. Once fully discharged, it will charge back to 100% again — but the cycle repeats. This behavior is not normal. A properly functioning laptop battery should remain at or near full charge when the system is running on AC power. This issue strongly indicates a faulty Battery Management System (BMS). To confirm the problem was not my laptop, I reinstalled the original (old) battery. With the same charger and usage, the original battery held its charge normally, confirming that the laptop and charging circuit are not at fault. This replacement battery is fundamentally defective. Its inability to maintain charge while plugged in leads to repeated deep discharges, which will rapidly degrade the battery and shorten its lifespan. I strongly recommend avoiding this seller/product and choosing a higher-quality replacement with recent, verified reviews instead.