First off, what is the voltage of your battery and what is its Ah rating?
Lipo batteries can be destroyed quite easily if not managed correctly.
Single cell lipos are generally charged to a termial voltage of 4.2volts...overcharging will cause them to explode.
Overdischarging will also render them useless. Do not allow the voltage to drop below 3v.
Low voltage cut off detection circuitry provides the protection of the cell/pack to pevent over discharge. This is usually incorporated into the motor controller.
Discharge current depends on the 'C' rating of the cell or pack.
Example, a 1500mah 3s pack has a terminal voltage nominally of 11.1volts, with a 20C rating a dishcarge current of upto 30 amps can be achieved. However it is not good practice to discharge packs to the 3v/cell limit...70% is a good ball park figure to aim for.
There are differing C rated packs available so its a case of horses for courses....
Charging requires a dedicated charger with a cccv regime with a charge termination of 4.2v per cell. Multiple cell packs also require balancing to ensure that all cells within the pack have a voltage equal to one another within 20mV or so...If a pack becomes unbalanced there is the danger of over charging a pack and eventually damage will occur...fire or explosion or personal injury.
Balancing is achieved using a dedicated balancer that connects to the battery pack via a dedicated 'pigtail' connector. This actually connects to each of the individual cells and shunts excess voltage during the charging process.
Where does all this knowledge come from?
I fly electric powered R/C aircraft powerd by lithium polymer battery packs...