|Stores power for later use.|
|Fits small ship|
|Fits large ship and station|
|Data Controls:|| [purge] (?)|
Immediately after construction, the battery will contain 30% of its capacity, ready to be used by other blocks. However, when grinding down a battery the power cells will become scrap metal.
When providing power, batteries are more efficient in terms of mass than Small Reactors on small ships, but they're only 80% as efficient as them in terms of power generated per volume when compared to them. However, batteries have the advantage of not requiring a conveyor system to feed them, and as such, they can be fitted in spaces not connected to conveyor systems, or possibly equaling/surpassing the power density of a reactor system connected to conveyors when used in large banks, which uncharged as a lot of dead weight.
Additionally, a fully discharged battery is just dead weight, until it can be recharged using another power source. If it is only needed to power a shuttle for 15 minutes or less, the battery's life will be sufficient to avoid this issue.
Given that each kilogram of Uranium ingots generates 1 MWh of power, one full charge on a small battery is roughly equal to 0.36 ingots and on a large battery about 1 ingot. However, recharging batteries with reactors only has a 80% efficiency, meaning you'll need somewhat more uranium to recharge them. Solar panels don't lose efficiency when recharging batteries. So the use for Batteries is when you have solar panels to charge them, otherwise it's a waste of uranium.
When providing power, batteries are given medium priority. Power is first drawn from solar panels, then batteries. Reactors are only used if the output of the first two options is not sufficient, in order to conserve their uranium fuel.
In the control panel, there is a "Recharge" option. Checking the box will cause the battery to draw power in order to build a charge, while unchecking it causes the battery to provide power to other blocks. The "Discharge" check box will only allow the battery to discharge its power. If neither "Recharge" nor "Discharge" are checked, then the battery will attempt to charge when there is excess power on the ship, and discharge only if there is not enough power on the ship.
Checking the "Semi-auto" option will cause the battery to automatically switch its mode. When it hits 0% charge, it will switch to recharging. When it reaches 100% charge, it will begin powering other blocks.