This brand new Dell Vostro 3400 3400n 3500 3500n 3700 3700n Extended Run Battery. The better quality cells by Samsung will provide a longer service life and longer run time as well. The battery is backed by a 2 year warranty but users often see a useful life of 3 to 5 years. Li-ion batteries are not subject to the memory effect common with older battery technology. This laptop battery replacement is 100% compatible with the original battery specifications and is guaranteed to work out of the box..

You can expect about 3 - 4 hours of run time with this computer battery when new, depending on your energy use.

Like all Li-ion primary batteries, your run time will decline over time.

This battery replaces the Dell Vostro 3400, 3400n, 3500, 3500n, 3700, 3700n series laptop batteries.

Laptop Battery Express only deals with brand new premium computer batteries. We never carry recycled or used batteries. We only use the highest quality cells inside the battery pack so you will have a long service life (300-500 recharge cycles). We do not use cheaper battery cells which can wear out in a little as 6 months. Our inventory turns rapidly and you will always receive a freshly manufactured battery.