NERFRival Rechargeable Battery Pack

This is definitely a must have if you have a blaster that can accept it. I'm using mine on the Nerf Rival Nemesis and it fits perfectly. The great thing about this is that it cuts back on the weight a ton! Instead of using x6 D-cell batteries, which really weighed it down. The other benefit is that it is rechargeable, so you can use it over and over again, without having to purchase a bunch of extra batteries. It charges pretty quickly, and there's a red indicator light that blinks once it's complete, so that's convenient. Additionally, you get an extended use time, plus added performance boost, whereas the D-cell batteries will start to deplete immediately, this you get a slight overcharge as well as a longer initial peak before you start seeing effects of the battery drain. So it's an easy way to up the performance of your blaster as well. All in all, I would highly highly recommend this to anyone interested!

Was a bit dubious but once I charged it and put it in the gun (Nerf Rival Khoas), Holy Moly, it paid itself back. Much more powerful than the standard D batteries and lighter as well. This really makes the gun worth-it.Now I'm just wasting time reloading the magazine instead of replacing batteries.

This rechargeable battery pack is compatible with a number of Nerf Rival blasters, including the Hera and Nemesis, the two I have used it with. Given that the Hera takes 6 C size batteries, and the Nemesis takes 6 D size batteries, this battery pack starts to pay for itself after the first couple charging cycles. Not only does it improve your pocketbook over the long term, it also yields slightly higher muzzle velocity (less 10 FPS higher than the regular batteries), and in the case of the Nemesis (it is full-auto while the Hera is semi-auto), a slightly higher rate of fire. The biggest improvement of this battery pack is the weight. It weighs in at about half the weight of its regular battery tray counterparts. Whether you are buying for a child or adult, this is an incredible improvement that will greatly increase the quality of your game. I cannot stress enough how much better the blaster feels in your hands with the extra weight taken off. This pack is a reasonable price at $30. I bought it at $15. Absolutely recommend.

Easy to use and simple to install. Used in my Nerf Rival Nemesis.

This Nerf Rival battery upgrade is decent, although it is still inferior to stronger voltage modifications (namely, LiPo or IMR batteries). This rechargeable battery pack will replace the need for a battery tray and noticeably increase the performance of your Rival motorized blaster. It is labeled as a 7.2v NiMH 1500 mAH Rechargable battery and comes with a wall-charge cable. There is a small red light on the adaptor plug that stays on while charging and it will blink when it is fully charged. Once installed, the rev-up time increased my Khaos by 3/4 of a second, and it added approximately 13 Feet Per Second (FPS) as well. It also fits in my Nemesis, and Hera (so far; at the time of this review, 11-8-2017). It will also increase the Rival Rounds Per Second (RRPS) another 2 balls (approx 5 RRPS instead of 3 RRPS). This battery will also be a lot lighter than the store- bought Alkalines (i.e. x6 Duracell/Energizer 1.5v D or C batteries) and should save you close to 3 lbs., which is kind of a big deal when running around with an already large blaster in your hands. It is suggested that you wait for the price to drop though, since I purchased my battery pack at close to the entry price (mines was an Amazon Warehouse Deal; used) of $30.00 (It is currently $24). Perhaps the best part about this rechargeable battery pack is the fact this will end up paying for itself because it is rechargeable. You know? So you do not have to keep buying (and wasting) lots of large and costly D (or C)- sized batteries.

World gray, better than buying batteries for the nerf gun

This battery works great. I bought it with damaged packaging from Amazon and it still performed as it should. I however lost the instructions, so for those of you who may get frustration free packaging, here is how it works.1) Plug it in2) Light will be steady red on the charger3) Blinking light on charger means ready to goIn my exoerience a blinking light typically means charging and a steady light means charged. So this seemed backwards to me. The battery is more efficient and lightweight than using standard batteries. You will see a slight performance increase using this (despite the slightly lower voltage it higher current). This battery is also more stsble than doing something such as a lipo conversion. I havr no issues with my 8yo switching it out due to this. Just pick up one of these if you have any blaster it works with. Its well worth it! Here is a list the blasters this works with as well.Comoatible with:Nerf NemesisNerf KhaosNerf Hera

Kids love having the extra battery for their games.