Help with DC Inverter Step Down

[CivBase]

Earlier today I was looking into power stations for tailgating at football games when I realized I could probably rig together something better on the cheap using the ebike batteries I already have.

I have two 52V 14S7P battery packs from EM3ev and they've worked great for the last few years.

EM3ev 52V (14S7P) Hard Case Ebike Battery Pack | EM3ev

EM3ev 50V (AKA 52V, 14s7p) Rectangle Ebike Battery Pack uses top quality official Samsung and LG Chem cells. With safety features not found elsewhere.

em3ev.com

1000W should be more than enough for my use case, so I'm considering a 12V 1000W inverter from Renology. I've had no problem with my 1000W Bafang motor - even running well above 1000W - so that inverter seems like a safe bet.

Amazon.com

1000W 12V Pure Sine Wave Inverter with Power Saving Mode (New Edition)

The new Renogy 1000W Pure Sine Wave Power Inverter transforms the DC power stored in batteries into standard household AC power for consumer electronic needs.

www.renogy.com

But I'm not confident about the step down from 52V to 12V. The inverter has a peak output of 2000W, which at 12V would be 166A. Split across two battery packs, that should be a peak draw of 84A per pack, max 42A continuous. That's pushing the XT90-S connector's limits, but it hasn't been a problem so far on my bike so I'm not too worried. Realistically, I won't be drawing close to that 1000W limit anyways.

My real concern is the step down transformers I've found are all rated for max currents well below that. Am I looking in the wrong place? Or am I misunderstanding something?

Are there any particular retailer or brands that anyone recommends for transformers or inverters?

 

[Gruesome]

I think you want a 48V DC input to 120V AC output inverter, not a 12V DC input inverter.
This is such an inverter combined with a solar MPPT charger, so has functionality you don't need.
Here is one on Amazon, which seems to have ok reviews.

A transformer will not work for DC (except once, for a very short moment, when you make the connection on the primary side .

 

[CivBase]

Woops, transformer is definitely the wrong word. I supposed I'm looking for a buck converter, right?

But I suppose an inverter that takes 48V directly would be pretty convenient. I was having trouble finding one like that on my own but I guess I'm just bad at searching. Thanks!