Hello
For your 2023 Jayco 25RB with a 12V fridge and no solar onboard, your current setup includes a 63 Ah flooded battery. You often boondock at NYS parks where tree cover limits solar effectiveness, but you have a generator for recharging.
You are considering upgrading to two 100 Ah flooded batteries. While lithium batteries are ideal due to their capacity and longevity, their cost is currently prohibitive for you.
A typical 12V fridge consumes about 30-40 Ah per day. With two 100 Ah batteries, you should have enough power to last around five days solely for the fridge. To maximize efficiency, minimize how often you open the fridge, use efficient LED lighting, and pre-cool your fridge and its contents before trips.
Regular maintenance of your flooded batteries, such as checking water levels and ensuring proper charging, is essential. Monitoring your actual battery usage will help you manage your energy needs better. If you need additional power, consider using portable solar panels when sunlight is available.
Thank you🙂