Are the above 2 items just water pump or they heat up
the water as well?
I'm looking for water heater (to heat up about 35-39 litres
of water in pail) for shower:
Would the following be under-powered, ie takes more than 20 mins
to heat up from my room temperature of 27 Celcius to 37 Celcius:
I plan to cut the car cigarette input & re-attach to the 12V battery below to power it:
Or anyone know of any aquarium heater that's battery-powered?
I've seen an EHeim model that can go up to 88 F (almost 31 C ?)
but it needs power inputs from wall.
I thought of APC mini UPS but this is too bulky a device (almost
7-8kg) & doubt its batteries have many charging cycles