Pull in sbot's batteries docs

Author: RealOrangeOne

docs/assets/img/kit/battery.jpg

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+# Batteries
+
+![LiPo Battery](../assets/img/kit/battery.jpg){ width="50%" }
+
+Your robot uses lithium-ion polymer (LiPo) batteries.
+These are similar to those used in laptops, and are small and light for
+the amount of energy they contain. This is great for your robot but it
+is vital to treat such a high concentration of energy with respect. If
+you do not, there is a serious risk of fire and injury. To avoid this,
+you should follow the safety information on this page closely, at all
+times.
+
+!!! warning
+	You must not use any batteries, chargers, bags or cables not explicitly authorised by SourceBots.
+
+## Warnings
+
+-  Never leave batteries unattended when they are in use.
+-  Always place the batteries in the provided bag when not in use.
+-  If a battery has any cuts, nicks, exposed copper on wires or is
+   bulging to the point of no longer being squishy, contact us
+   immediately.
+
+!!! danger
+	Disobeying the above warnings greatly increases the risk of damage to your battery, which can have **fatal consequences**. If you have any questions or doubts, talk to a member of staff immediately.
+
+## Storing batteries
+
+When your batteries are not actively in use, they should be safely
+stored. You must disconnect the batteries from all electrical equipment,
+and place them in the battery charging bag. You should then store the
+charging bag in a safe location.
+
+## Operating batteries
+
+To use your batteries, you must connect them to the power board. Do not
+tamper with the cable or connect the batteries to anything other than
+the power board (or the charger when charging).
+
+During operation, the battery is protected by over-current protection
+and a fuse in the power board. If any equipment is short circuited, the
+over-current protection will activate, protecting the battery. In
+extreme circumstances the fuse may blow to prevent damage to the
+battery. This is an important safety feature: do not, under any
+circumstances, bypass the fuse. It is not user serviceable and if it has
+blown then the power board must be replaced. If you suspect the fuse has
+blown then please contact us straight away.
+
+Mechanical damage to a battery can be dangerous, and a puncture or large
+force applied to a battery causes a serious risk of fire. To avoid this,
+your battery should be shielded from mechanical damage while you operate
+it. Secure your battery to your robot, so that it does not move or fall
+off while the robot moves. You should also build a compartment for the
+battery to be placed in, so that accidental collisions do not damage the
+battery.
+
+## Flat batteries
+
+When the battery has been almost completely discharged, the Power Board
+will automatically turn off and the LED marked “Power / Flat Battery
+Indicator” in the [diagram](./power-board.md) will
+flash red and green. You should immediately disconnect the battery. Flat
+batteries should be given to a faciliator in exchange for a freshly charged
+battery.