3500mAh W-7 Battery, (2024 New Upgrade) Replacement for Netgear AirCard 779S 780S 790S 790SP 810S 4G LTE Mobile Hotspot, Model No: W-7/W7

I've typically had to go to somewhere and have them do this but thought I'd save some money and do it myself. I am so glad I did because not only did I save myself a lot of money but this was so easy to replace. This did come with instructions which were really helpful. The moment I removed my old battery, I compared it with this one and they were almost identical but were both the same size. Not only did this battery fit inside of my phone perfectly but this actually came with a partial charge. The moment I plugged my phone in, after I installed this battery, it charged a lot faster. The other thing I noticed is that this battery lasts a lot longer and even my screen is brighter and not as dim as it used to be. The battery doesn't overheat while being charged and I'm able to do more stuff throughout the day with just a single charge. Definitely quality made and allows me to not have to charge my phone throughout the day.

Strong battery. It lasted 2 days on my wife's iPhone 12 minimum usage to reach the recharge point (recommended for the first 8 cycles only recharge until it is below 20%). Very happy spent the time to do it myself!!

Giving 5 to have everyone aware. Phone overheats with this battery. Very much. It’s easy to install. I’ve had it for a day and it’s over heating terribly

This is not 19,800 mAh, and I was quite a fool thinking it was. In 2025, phone batteries are around 3000mAh, tech is not advanced enough for much higher. That blatant lie of the capacity is worth the one star alone.Instructions are more useful for kindling fire than they are at informing you about anything relevant. Tools are serviceable, and spending 20-30 for a new battery is better than a new phone.The kit did come with everything needed for the battery replacement and it fits well, and functions. So far it’s better than a 6 year old battery, but unfortunately I have no idea the true capacity without expensive electronics. I wish I went with a company that doesn’t blatantly lie to you.

I replaced my iPhone 12 Pro battery with this 19800mAh upgrade, and the battery life definitely improved a lot—my phone lasts much longer now, which is awesome. The kit comes with all the tools needed, which helped a lot. That said, the installation was pretty challenging and took me a couple of hours since it’s delicate work. Overall, a great battery at a good price, but I’d recommend watching some tutorial videos before trying it yourself.

First, I did have the battery installed by a professional since one of the screws in my phone wouldn’t come out to open it! I let my battery run to zero before charging it the first time. I took it off the charger at 6:30 p.m. on Tuesday and it is 11:15 a.m. on Thursday and the battery is still at 52%!! It took 5 hours to charge! I love it!!!

The Luuzkla 19800 mAh battery comes with incomplete instructions and a bad set of tools and replacement seals. The screw drivers are unmarked and it's hard to identify which one to use. The adhesive tape to secure the battery are not standard replacement tape and much too small, and the screen sealer supplied is much thinner than the original. Your phone is NOT going to be water resistant after using this sealant. TIP: LOOK FOR A BATTERY FROM A COMPANY THAT HAS AN INSTRUCTIONAL VIDEO FOR THEIR PRODUCT, THEN WATCH THE VIDEO BEFORE PURCHASING! Luuzkla says look around for somebody else's video and watch that! ("highly recommended relevant videos of replacing the battery on YouTube.") I have done 5 battery replacements, and this kit and supplies were the worst.

It is advertised as a 8200 Mah battery for switch lite, it is a 3160mah battery once installed. It does not give any extra battery life