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- clover1980 (686)- Feedback left by buyer.More than a year agoVerified purchaseSmooth transaction 👍
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Reviews (2)

06 Jun, 2016
Item very fragile - be warned
0 of 1 found this helpful Unfortunately, the cable that is used is very flimsy. The female end will only work intermittently when bent in just the right way. Stick with the regular single piece cables as those are less likely to break during shipping.

22 Nov, 2017
Review of HP Elitebook 840 g1 extended slice battery
So this thing can add up to 12 hours of battery life to your laptop, but can be a bit tricky to install especially since the whole thing feels so flimsy.
Basically there are two faint lines on the end facing you that you need to align with the corresponding ridges on the back of your laptop, and drag it back at just the right angle to try and get the hooks to catch. Then you need to press the other end down, making sure to slide the latch to the left. Once you've clicked everything in place (including the battery contact on the top left), slide it to the right to lock it in place. Reverse these steps to uninstall. Graphical instructions also visible on the back.
Also you probably need to remove the back cover (even though you can install it with the cover on) and avoid CPU intensive tasks as it tends to run about 10°C hotter when installed.
There is a small button on the back that you can press to see the current charge (up to 4 small white LEDs will light up). There is a small charging port in the top right to allow you to charge it separately from the laptop. I have no idea where such a charger can be found.
If you have a WWAN card, you'll still need the primary battery to be installed to be able to use it.
This is a 6 cell battery rated at 12.6V (boosted from 11.1V), 5200mAh.