The digital battery, what is it ?

[abdulbadii]

Was given away a battery on which the "Digital battery" is printed mainly, so is "12V", with size almost 2/3 of AAA size and the same diameter or slightly more.
So the question is what actually is the digital battery, what is its definition?

[BrokenYugo]

Sounds like a regular off brand chinesium A27 battery, nothing actually digital about it.

https://en.m.wikipedia.org/wiki/A27_battery

[Gyro]

So the question is what actually is the digital battery, what is its definition?

It's either leaking or it's not. 

[EPAIII]

Just one more sales gimmick.

[Siwastaja]

In late nineties, all headphones suddenly transitioned into "digital headphones".

One could think this had something to do with replacing analog audio with digital comms, or adding some DSP, but this was not the case. It was just a trend word misused by most headphone manufacturers. It had to do with digital CD audio. i.e. portable CD players replacing the cassette "Walkmans".

The same kind of marketing was seen in batteries, carry cases and whatnot when digital cameras were groundbreaking and trendy in early 2000's. Suddenly a simple bag could be transitioned into "digital". It's kind of refreshing to see such retro marketing 20 years later now.

[Circlotron]

I put analog paper in my printer once. Messed it right up. Now I only use digital paper.

[Siwastaja]

That one has "kind of" point that it's optimized for use in digital printers (both inkjet and laser, which involves some compromises), at the expense of it not being optimal for writing with pencil. For a pencil, a tad rougher surface could be better.

But the headphones have no "optimization" of any kind for such D/A signal source. In case of batteries, this "digital" title sometimes means they are high-power cells because digital cameras were known to be power hungry. Unsurprisingly, before the digital camera era, camera batteries were sold, and expensive. Even back then, charging up the flash capacitor took quite some peak current, cameras were used outside so possibly at cold temperatures, and you didn't want the camera to die during use. So these "digital" brands may be higher current, more expensive cells, compared to ones sold to be used in remote controls for example.

But eventually, coming to 2010's, most digital cameras transitioned into rechargeable li-ion packs specific to the manufacturer. I haven't seen "digital" batteries in a while.