KARUF 3.7v 1800mAh Battery Replacement for Corsair HS70,HS75 XB, Void Pro RGB Headset, HyperX Cloud III/Cloud II Headset

Needed to replace the stock battery in a Corsair HS70 Pro Wireless that was getting less than 2hrs on a full charge.Highly recommend watching YouTube videos on how to replace this before purchasing. Although the headset's battery is replaceable, the process is not user friendly.The stock battery is glued into place so you'll need something to break the adhesive and pry it out. Two wires had to be reversed as shown in the product photos. There are no included instructions so be sure to check the wires before installing. I used a utility knife to pry up the clips holding the wires in the connector.DO NOT let the wires touch. Wrap the connectors in electrical tape while reversing them.The angle of the female connector made this very difficult to reinstall so I had to bend it slightly to get it to fully insert.A bit of super glue got this to hold in place.Left the headset on for 8 hours straight and it wasn't beeping that the battery was low.Very happy getting another few years out of this headset at a fraction of the cost of tossing it for a new one. Great battery that works as advertised.

I purchased this to replace the battery in my wireless CORSAIR gaming headphones which was not holding a charge anymore. After following directions I found on YouTube for this known issue, this battery is working like a champ and holding a charge. Very pleased that I could keep the headphones and just replace the battery to get more use out of them.

Please watch a video before replacing! I purchased this battery for my corsair hs70 pro wireless and I didn't know that the wires needed to be swapped and started smelling smoke after replacement. I have swapped the wires correctly and it is now working.

As with many of the other reviews, I also had to switch the wires to match the correct polarity with my Corsair HS70 Pro. The replacement took about 20 min altogether with most of it fiddling with the wires prior to the actual replacement. The ear cup comes off fine, remove some screws, and then pry up the old battery from the glue/adhesive that was used. Then simply plug in the new one.The new one worked great for about 3 months with about 6-8 hours of charge (I use my headset all day for work). The next 3 months the charge dropped to around 4hrs and I was getting some spotty charging results. Over the last month, it would spontaneously stop charging and I would get to my desk in the morning and it would only last about 15 minutes. Sometimes it would be dead as a doornail. Then sporadically I would get 3-6 hours of charge out of it again. It has gotten so inconsistent that I'll be buying another battery (possibly from another vendor). Still, it is cheaper than replacing the headset altogether.

I can't comment on longevity of this battery, as I just purchased it a few days ago. I bought it to replace the factory battery in my Corsair HS70 Pro Wireless headset and it was a perfect fit. The only thing that might be a pain for some folks to install, is that the positive and negative wiring was reversed with the new battery. It took me five minutes with a letter opener and my magnifying glass light to gently pry the plastic tangs holding the positive and negative wires in the tiny connector of the new battery to swap the position of the two wires. I used some electrical tape to fold and attach the battery to the housing in the headphone case. After getting the headphones back together, I tested turning them on and they powered on fine. I let them charge fully, then used them for hours the next day unplugged. So far, very satisfied with new battery, will see how long it holds up to daily use. Nice to pay $20 to fix versus paying another $100 for a new headset!

if i could give a 0 i would first battery showed up with the negative wire not even attached 2nd one i got after RMA dosent even work polarity is correct biggest scam ive seen on Amazon headset is corsair virtuoso RGB

This battery is works, but it's low quality and reaches end of life before 1.5 years in use. Purchased this batter Dec 2023. It's May 2025 and this battery is already end of life (losing 80% charge within 30 minutes of use). The original factory battery lasted 8 years before it got this bad. If a replacement part can't exceed the factory default, it's trash. This is a trash battery.

Verify the leads need to be swapped before swapping them, but it is the most likely issue you will encounter, luckily they designed these leads to be swapped pretty easily. Replacement of the battery itself is not necessarily a fun task, but I was successful in the transfer of batteries.