In line with other recent Samsung phones, the battery squats in a little pit of glue-lined sadness with no pull tabs, but we quickly set to work digging it free with heat and a plastic card for some leverage.

The A51 features a Li-ion 4000 mAh battery, the same as the A50!

Now that the battery is out, we can compare it to its competitors! Fully topped off, this 3.85 V, 4000 mAh cell will deliver up to 15.4 Wh of power. That’s more than the iPhone 11 Pro Max with 15.04 Wh and only slightly less than the 15.79 Wh battery in the S10+.