I'm looking for a power source that is able to deliver 12V at 15-30A (yes, amps). I was looking at high capacity batteries, but looking at the specs, they either say they have a lower discharge voltage than 12V, or they don't say anything at all.
Do such power sources exist?
I'm hoping to use this in a hydraulic system. The pumps I've seen require 12V/24V and consume around 10-15A minimum. I've been looking at Hydraulic Power Units (HPUs), and their specs say that power consumption is really high.
Reading around, it seems most, if not all, hydraulic systems are powered by small diesel engines. I would really like to avoid that, if it is possible.
If such high capacity power sources do not exist, what would be my alternative?
Apologies for the above sounding like a "find things for me" question. This was not the intention. Maybe I haven't actually understood fully how hydraulic systems actually are designed. Also, I'm not very good with words.
I am new to hydraulic systems, and I am in the process of designing a portable hydraulic system, similar to ones used in vehicles, like construction vehicles. However, my hydraulic system will not be part of a vehicle. I realise vehicles use their engines and some form of petrol/diesel to electricity generator to obtain the power required, but I cannot see a way of obtaining that same power without using a vehicle's engine.
How would I go about getting that same power without the use of a vehicle? Ideally, the system can be moved around without it being attached to AC wall electricity, but that can be left until a later date.
Details/Background of my project:
I would like to build a hydraulic exoskeleton that uses as little electrical components as possible. I have gone for hydraulic over pneumatic as hydraulic packs a lot more punch than pneumatic. Most of the sites online sell the valves, pumps, pistons etc, but I have previously found it difficult to find a way of powering these pumps, up until I asked on here a while back, where I was introduced to HPUs. From what I have understood (do correct me if I'm wrong), I need a way of powering these HPUs to generate the necessary RPM and flow rates.
I have found the pistons I would like to use, the hydraulic fluid, how much to use, the reservoir tanks, the filtering system, etc, but I am stuck on the power source. I just have no idea how to harness the power I need for this. This is where I started looking at ultra-high capacity batteries.
To be honest, I don't even know which would be best, a DC- or AC-input motor. My thought was that the constant forward drive of the motor required a DC source, hence the batteries. The link I provided in the comments below points to AC motors.
I'll keep adding details if and when they are required. As I said, I'm not good with words and I'm new to hydraulics.