I was looking for an additional sub-battery for my Town Ace-based camper van and came across this product.
My existing setup was two 100Ah lithium iron phosphate batteries with heaters (200Ah total). Initially, I considered adding another 100Ah battery of the same model.

After measuring the space, I realized that a Vatra Power 460Ah battery would fit if I removed the existing ones, so after much deliberation, I decided to replace them.
It's only been about a month since I bought it, but I went ahead and did a complete replacement.

It's amazing to find a 460Ah large-capacity, space-saving battery with a heater at this quality.
My previous Plyntec 100Ah had Bluetooth and a heater, but considering the cost per unit, I essentially gained 460Ah for the price of adding one more battery.
There was also a 320Ah model with a heater, but for my needs, the Vatra Power was by far the superior choice.

In my vehicle, I could easily fit up to three 100Ah batteries, but not four.
The concern was the weight. The biggest challenge was transporting it to near the vehicle with a dolly and successfully loading it into the battery compartment enclosed by a wooden frame. I, an old man over 60, managed to install it by myself.

The shipping cardboard was very sturdy, and the packaging was meticulous, with anti-sway measures at all four corners. I felt the manufacturer's conscientiousness.
The cable terminal covers are still being processed, so only temporary terminal caps are attached.

Now I can use the air conditioner all summer long and feel secure until morning.