NinjaBatt Battery for Acer AS10D31 AS10D51 AS10D56 AS10D75 AS10D81 AS10D61 AS10D41 AS10D73 AS10D71 AS10D3E Aspire 5250 5733z 5750 7741 5733 5755 5253 - High Performance [6 Cells/4400 mAh/48WH]

Great replacement for my laptop excellent product.

This is the 2nd one we have had over the year's, really good battery so simple to use and hopefully it will last a few year's like the last one. Definitely recommend

Excellent product, clear instructions on conditioning the battery, good life, great value for the money.

ordered it on Saturday 9th arrived Sunday 10th so top marks for delivery. It was well Packed and professionally wrapped and boxed.The battery fitted smoothly into my machine and locked into place firmly > it was 65% charged when it arrived and it has now been charged 100% full and appears to be holding charge well.One minor concern was that my original battery for my acer aspire 5742 was a 11.1 v 4400mah where as this one supplied for this machine is a 10.8 v 4400mah.. (am assuming this will not be an issue as it was sold as suitable for a 5742.)

Worked right from the start. Simple to fit and easy to use. No idea on its life yet, but the battery charged up easily and so far no problems. The great thing is my old laptop has a new life and that's a big saving.

Excellent battery...I only use my notebook rarely and when I found it in a poked away in a drawer I realised I hadn't used it for 18 months!I didn't attempt to see if there was any voltage (wished I had) just put it on mains chargeuntil full.I will spare you the hours of updates that it required.This is a nearly 16 year old Acer, original built for Win 7 and being clogged up was an understatement.Saved precoius, wiped the lot.Split HDD and have Win 7 Ultimate for thge same reason people keep vintage cars. the look of it and the Iconsput Win 10 & 11 to shame. Not an Apple fan but they kept their 'look' but still look good.I digress, I don't know the average time a notebook battery shoulkd last, as it would depend on the type of work....but it keeps going for several hours as I hoped that using the battery would maintain it's expected lifespan.So well done Ninja...you in my eyes have made and excellent product with and exterior built quality as good as the original!I would recommend you to anyone and everyone, Princes and paupers and the Crowned Heads of Europe...

Good battery at a fantastic price. Even though the battery showed a full charge after an hour I kept it on charge for 24 hours. This is to give the battery an intensive first charge and is recommended. I took the battery off charge and was on YouTube for 3 1/2 hours before the 10% warning showed itself. Letting the battery ease down to 3% I then put it back on to charge. 100% took 1 hour and 20 minutes.Of course how reliable and how long it lasts remains to be seen.I can remember when laptop batteries were £100+ so buying one for this price is exceptional. I took a gamble and must say so far am completely satisfied.It is, of course, made in China with company offices in Redondo Beach California. With an address like that I'm surprised they spend any time in the office ;-)

Purchased for an older laptop as the original battery was holding no charge. Worked straight away very pleased. I did purchase a cheap compatible before this and I had to return it. No issues with Ninja Battery at all. Will use again