It can be powered by either two AAA batteries, or one alone. In fact you can't even plug in a USB cable to charge as it runs on AAA batteries. I hope you enjoyed this G305 versus Rival 3 Wireless comparison, and let me know which one of these you would pick and why.One of the biggest selling points for this mouse, which contributes to its miniscule weight, is that it is meant to be totally wireless. Now if you have both batteries populated the compromise here is the mouse is slightly heavy. Unless you are constantly using this as your main desktop mouse you probably won’t reach the 1 year battery life, but 400 hours is still fantastic.

Honestly though, I have been using the G305 with my notebook and I’m down to one battery bar out of the three after like 9 months of use. Technically, the Rival 3 is superior with higher switch lifespan, better sensor, and much higher battery life. It is probably one of the reasons why this mouse is heavier versus the G305. I really appreciate this barebones form factor that hits a really good price point while still offering incredible battery life and Bluetooth functionality. I have been gaming with this mouse for the past two weeks and my CS:GO going performance has definitely improved since I started to train more. Theoretically that same trick can be applied to the Rival 3 if you can find li-ion AAA batteries, which will give you a nice lightweight body Now the G305 has an additional trick up its sleeve because you can substitute an included battery with a lithium-ion battery, which is lighter, therefore further reducing its weight. Removing one of the AAA batteries gives us an equivalent weight to that of the G305. When we fully load up the batteries in both mice, you can see that 107 grams for the Rival 3 Wireless is a bit on the heavy side compared to the G305’s 97 grams. And so this is one of the advantages but also disadvantage of the Rival 3, because the mouse itself (without any batteries) is almost 10 grams heavier than the G305. What is really cool here is that the mouse can be powered by a single battery on either side – you don’t need both installed – so not only do you have a kind of weight distribution customization potential, but you can also remove one of the batteries to have a much lighter body.

Rival 3 wireless