Here are a few effective and easy tips to extend the lifespan of your Nebula battery:

Avoid extreme temperatures 

The recommended operating range for a Nebula projector is 0° C to 35° C (32°F to 95° F).

Do not let your Nebula overheat

Battery overheating may permanently damage the battery capacity, unlike extreme cold weather which only reduces the battery capacity temporarily.

Use original or compatible chargers and cables

Never use chargers or cables that do not have exactly the same specification as the original one as they may potentially damage the battery.

Avoid completely draining the projector's battery

It stresses the battery and also shortens the battery's lifespan to drain the battery completely too often. Thus, do not completely drain your Nebula's battery unless you're calibrating it to let the software calculate the actual range of battery (draining the battery completely may help when your Nebula seems to not fully charge).

Unplug and turn off your Nebula once you do not use it

Don't keep your Nebula plugged in when it is not being used to avoid overcharge, and turn it off after each use to reduce battery cycle will help extend battery lifespan.