Leaving a coolbox on the car’s 12v supply will drain the battery – how long that takes depends on the model of box. … Remember too that they really need to be cooled down completely on mains – when on 12v they’ll maintain the temperature but not get much cooler.
Can you run a 12v cool box from a leisure battery?
The coolbox is rated at 12v 45w. Thanks in advance for your help. 12 Volts at 45 Watts is roughly 4 Ampres. On EHU – no problem if run from the leisure batteries.
How long will a leisure battery run a cool box?
You’ll be lucky to get 5 hours from it. Coolboxes are very inefficient and they can only cool so many degrees below ambient so if it’s warm outside it’ll be working even harder.25 мая 2020 г.
What drains power from car battery?
Even while your car is off, your battery provides power to things like the clock, the radio, and the alarm system. … What may drain a car battery when it’s off, however, are things such as interior lights, door lights, or even bad fuses.
Will camping fridge drain car battery?
Camping fridges drain your car battery whenever they are connected, and your engine is not running. With most camping fridges or fridge coolers, assuming your car battery is in good condition, you will be good for a single night, and still have plenty of juice to start your car.
How long will a car battery run a 12v fridge?
Re: How long will a Waeco run on 12V? Using the figures that you have supplied with an ambient of 32C, and providing the battery is in top condition and fully charged, and with no charging taking place, you could expect to run only the fridge for about 18 hours before the battery is down to 50%.
How long can a car battery run a 12v fan?
Your 30 watt fan will draw about 2.5 amps at 12 volts (2.5 times 12 is 30). Assuming 90% efficiency from the inverter means that the inverter will draw 2.5/. 9, or 2.78 amps. A 50 Ahr battery will last 50/2.78 or 18 hours.16 мая 2018 г.
Will a 12v fan drain my car battery?
It depends on the load (How much the fan draws from the lighter thing), and the capacity (amount of charge) of your Battery, and the amount of charge your Battery currently has. … Your Fan would run Constantly without draining your car’s Battery at all .
How long does it take to drain a 12v battery?
New Member. Antigrav, you need to get in touch with the battery manufacturer you are going to use and get his datasheet for the specific battery you are going to recommend. Most batteries are rated for an 8 hour discharge time (except for Gel Cell who uses a 12 hour rate) at 20 degrees C.
Do electric cool boxes work?
No they don’t work! And they’ll run the battery down in 12 hours. I have a gas coolbox and that does work really well. Keeps stuff really cold in this country and reasonably cold in hot places.
How often should I run my car to keep the battery charged?
All the experts Business Insider spoke with recommended starting a car once per week to prevent a dead battery. While idling your car may be better than nothing, actually driving your car is the best way to recharge a battery in a timely manner, even if it’s just around the block a few times.
How long should I run my car to charge the battery?
If your car does start, let it run for a few minutes to help charge the battery further. Unhook the clamps in the reverse order of how you put them on. Be sure to drive your car for about 30 minutes before stopping again so the battery can continue to charge. Otherwise, you might need another jump start.
What is draining my car battery overnight?
A short circuit may cause excessive current draw and drain your battery. Check the charging system for a loose or worn-out alternator belt, problems in the circuit (loose, disconnected or broken wires), or a failing alternator. Engine operation problems can also cause excessive battery drain during cranking.
How long will a 100ah battery run a fridge?
How long can I run a fridge off a car battery?
If disconnected from the car, a 12-volt, 50AH equivalent, flooded lead-acid car battery and a properly sized inverter (1,500 watts minimum) can power a fridge for about 11 minutes until 50% drained, and about 21 minutes until the battery is completely discharged.
Do I need a second battery for car fridge?
To keep the fridge running while the vehicle is parked, you need plenty of reserve battery power. … So a dual battery system is a must. There are a few ways the second battery can be wired into the vehicle, depending on its intended use and the system flexibility required.