We need a 3.7 V battery. Anything higher would likely cause significant damage to the 3DS and may be a fire hazard. Luckily, virtually every battery made for the 3DS outputs at 3.7 V.

Mugen's New 3DS XL battery upgrade claims to triple playtime, but how does it fair in real time battery tests and does it ruin the sleek New 3DS design.

The battery in the Nintendo 3DS is as bad as we had feared, and it's a major impediment to enjoying the system. Here's what we've found so far, after playing with the system for a number of days ...

Battery Test. The first test looks at battery life of the 2DS, 3DS, 3DS XL, New 3DS and New 3DS XL. To ensure a level playing field each system was set to brightness high, WiFi on and 3D off.

Handheld games machines demand lengthy battery life, so how does the 3DS fare? We drain, deplete and demolish Nintendo's new machine, and show how to squeeze more juice from your own console.

Face it, the Nintendo 3DS stinks for battery life. Let’s not pretend it doesn’t matter, or that it’s okay because we’re getting nifty no-glasses 3D, or, you know, put lipstick on a Tepig .

That’s the question everyone keeps asking Kotaku’s Brian Ashcraft, who bought a 3DS on the Japanese launch day. You can read all about his battery findings here: [Kotaku] https://kotaku.com ...

On this important matter, Sony and its just-released-in-Japan Vita can chalk up a win over the Nintendo 3DS, which it handily outlasts in a new test of battery life.