19Ah is the battery capacity in amp x hours. This is unrelated to the amount of current the battery can source. As others have said, this is only limited by the internal resistance of the battery. I once designed a UPS battery pack with individual sealed-lead-acid cells and they actually specified a "short-term short-circuit current" in the datasheet. I remember it being about 400A.Most I've seen use a 19ah sealed lead acid battery.
Nope. Regardless of internal resistance, the internal safety circuit in a LiIon battery will disconnect the battery before allowing an excessive current.I don't know. I'm just wondering if its possible to produce 200amps from a 12v lithium ion battery.
Of course it's possible. Put enough cells in parallel and you can produce whatever current you want. A quick search revealed this site:I don't know. I'm just wondering if its possible to produce 200amps from a 12v lithium ion battery.
I was answering op's question "what kind of battery is it". And most jump starters I've seen use that particular battery capacity. Sure, they can give an instantaneous huge amount of current.19Ah is the battery capacity in amp x hours. This is unrelated to the amount of current the battery can source.