Hi rag,ok.. lets say I have a motor that is about 200-300 hp and have batteris that can carry the power of 44,8 kWh how long does it take to recharge them?
I can guess you can buy few type´s of chargers but what is the fastest and what is the slowest? like in hours?
First off, get your units straight. 44.8 kWh is a measure of energy. Which is different from power. Energy = power * time. Let's round off to 45 kWh. And consider everything at 100% efficient for example purpose. Then you could charge a 45 kWh battery in one hour with 45 kW of power. Or in 2 hours with 22.5 kW of power. Or in 20 hours with 2.25 kW of power.
Considering available chargers which can run off of a 240V 30A single phase outlet (like you would have for a dryer or range) are in the 2 to 4 kW range, you better plan to take a day or so to charge Using a 110V 15A circuit, better plan on 2 or 3 days.
Now if you had a dedicated generator for charging, say like a 60 KVA run by a 150 hp engine, you might be able to charge a 45 kWh battery in an hour.