Pico Pocket Projector Battery Life

It's quite typical for a pico projector battery to last around one hour. 60 minutes is not very long if you want to watch a movie or give a presentation. 

It's fine if you just want to show a few photos to friends, or give a short impromptu demo. 

The quoted battery times are usually for activities with a lower load. If your media puts a higher load on the projector then the battery time will be reduced (many pico projector users report lower battery times than reported.)

And of course the capacity of batteries does decrease over time. 

Pico projectors generally have a rechargeable Lithium ion (li-ion) battery. This a common type of battery for gadgets. 

A key consideration is whether you can get a spare battery for your pico projector so you can swap it in when the first battery runs out. 

Admittedly it's going to be much less convenient if you have to take an extra battery with you - one of the reasons for choosing a pico projector is its small size after all. 

And additional batteries will cost more. You may be better off buying a more expensive projector with a longer battery life.  

Some Pico Projectors have a brightness control. If you are in a dark room, or don't need a very large image then you may be able to turn down the brightness and extend the battery life. 

It's typical for a pico projector battery to take around 4 hours to fully charge from empty. They take much longer to charge than discharge and you are going to need access to a power supply for several hours to charge up a projector battery. 

Note that in most cases the battery will not charge well while the projector is in use. So you won't be able to use the projector and recharge the battery at the same time. 

Also remember that the battery will need to be in the projector to charge, so you won't be able to charge multiple batteries at the same time unless you can find a compatible Li-Ion battery charger to take with you (it's not looking so portable now is it!) 

You might expect that newer pico projectors will have a longer battery life as the technology improves. But this is not necessarily the case. Newer pico projectors are often more powerful than older models. 

This means that you will find older projectors with longer battery life than newer projectors - but less brightness. If battery life is more important to you than brightness then you may find an older model is the better choice.