With the Venue 8 Pro (5830) Tablet battery fully charged, we left the tablet on our desk in standby mode for two days.

With the Venue 8 Pro (5830) Tablet battery fully charged, we left the tablet on our desk in standby mode for two days. After 24 hours, the battery had drained about 13% of its charge; after another 24 hours, altogether it had lost 22% of its charge. 

with the following symptoms ,you had better make a replacement for your battery ; 

1、Your battery is changing normally. However, you may begin tonetic reduced operating time because your long-term battery life is decreasing

2、Your battery is changing normally. however it is reaching the end of its usable life. You can experience a longer operating time with a new battery. You may want to consider purchasing a replacement battery now.

3、Your battery can no longer provide sufficient power to your system and needs to be replaced.

4、Your battery has experienced a permanent failure and needs to be replaced.

High quality DELL 74XCR 2-cell laptop batteries for Venue 8 Pro (5830) Tablet
Voltage: 3.7V
Capacity: 4864mAh (18Wh)
Chemical: Li-polymer
Color: Black
Property: new original batteries
Warranty: 9 months
Specials:  Save 30% OFF (including taxes)