What size leisure battery do I need ?

Q) What size leisure battery do I need ?

A) Choosing the correct sized battery for your Caravan or Motorhome can seem to be tricky.

The values below serve as a rough guide and are based on CXV Dual Terminal Batteries.  We advise that you calculate the total wattage of all devices on board your vehicle and divide it by the voltage to obtain the Ampere Hours needed from the battery.

Bear in mind that these values may vary because of extreme temperatures, wiring efficiency and so on :

(86Ah Battery)
12V for 35 Hours at 30watts
12V for 6.9 Hours at 150watts
12V for 1.03 Hours at 1000watts

(96Ah Battery)
12V for  38.4 Hours at 30watts
12V for  7.68 Hours at 150watts
12V for  1.15 Hours at 1000watts

(105Ah Battery)
12V for 42 Hours at 30watts
12V for 8.4 Hours at 150watts
12V for 1.26 Hours at 1000watts

(110Ah Battery)
12V for 44 Hours at 30watts
12V for 8.8 Hours at 150watts
12V for  1.32 Hours at 1000watts

(120Ah Battery)
12V for 48 Hours at 30watts
12V for 9.6 Hours at 150watts
12V for 1.44 Hours at 1000watts

A good rule of thumb when asking ' What size leisure battery do I need ? ' is to go one size bigger where budget allows!

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