NinjaBatt Battery for N53SV N53S G50VT G51VX M50 N53 N53J N53JQ N53SN N61J N61JQ N61JV A32-N61 A32-M50 G50 G60 A33-M50 G51J L062066 M60 [6 Cells/4400mAh/49Wh]

This battery is very well made and fits my Asus N61JQ like the OEM battery. Once installed my power issues were corrected. (side Note:) the battery came charged approximately 75%, which is also a plus. If you need a replacement battery this is the place to look!

I bought this battery to replace the OEM battery in an ASUS N53J laptop. So far it is looking good. I ran several different battery analysis programs against it and the specs appear to be as advertised. I have had it only for a short while and ran it through several charge/duscharge cycles thus far, and it is performing well. I am happy with my purchase to date. Also, the seller sent along useful info on how to properly care for the battery, and what not to do. The info was in line with what is found on Battery University regarding lithium batteries, so kudos to NinjaBatt for giving accurate advice. As things stand right now, I would purchase again from NinjaBatt.

Original review: It arrived quickly, but less than 2 months after receiving the battery (with about an hour of use a day, 5 days a week), it only holds a charge for 15-30 minutes. DO NOT BUY. One star for making my laptop slightly more portable than a desktop. UPDATE: They contacted me shortly after I wrote my review, and offered a free replacement battery. It arrived a few weeks later, and (so far, after two days) it works just as it should. 4-stars for excellent customer service (and the free external phone charger they gave me for my first review - before the battery died and I had to write the bad review that prompted the replacement battery), and a good quality replacement battery. So far, so good- and if there are no more updates to this review, that means it continued to work :) Great company to work with!

Works in my Asus N53SV. Arrived with about 65% charge. Perfect fit sizewise. Lower maH with .3 volts higher rating than my original battery. I wish the battery had the same mAh as my original but it's true to seller's description so I won't remove stars for that. I'll try to remember to update if it goes out but i dont use this laptop often so i may forget

It arrived and came 54% charged. It started up initially with no issue. Once I shut down and restarted I got a black screen. I consistently have to perform battery drains. So it's still under review. I've purchased replacement batteries in the past and have not experienced such issues prior, however with new technologies it may be par for the course.

Nice solid replacement battery at a good price. I'm using it in an Asus N53S with core I7, 16 gb ram and I'm getting 2 - 2.75 hours depending on the power setting. This laptop is a power hog and the Ninja Battery is holding up as long or longer than the original battery when it was brand new. I highly recommend following their instructions and fully discharging and recharging the battery three or four times when you first begin using it. Great purchase, definitely recommended!

Battery holds charge fine but my laptop turns off randomly when running on battery, no matter how much charge is left. Note that it is not a clean shutdown. Looks as if there's no power coming in. And when the laptop is coming out of sleep or hibernate on battery, it always turns off. I initially thought I got a bad unit and ordered a replacement which behaved the same way. My original battery that came with the laptop never behaved this way. It doesn't hold charge long but as long as it has juice left, it comes out of sleep fine and runs great without any issues.

Opened box, inserted into laptop, laptop fired up. Was surprised it had a little charge on in. Was impressed with the fit and finish of the battery itself. You'd never know it was a replacement. I'm going to wait a while to test out the long term performance and charging. I'd certainly buy a NinjaBatt in the future.