Advice needed on car batteries w/ inverters and chargers, for emergency power

I'd like to use car batteries as one of my emergency back-up power sources. I have several inverters that work nicely. 1) Is it a good idea to buy a battery charger to make sure the battery is always live? (Walmart has this one on sale for $16 w/ ten 5-star reviews: http://www.walmart.com/ip/Schumacher...94262557140238 ) 2) Can I buy an extra car battery, let it sit in my garage for years, then plug-in the charger, charge it up and then use inverters... and my appliances will work? Is it that simple, or am I dreaming? Thanks.

Car batteries are not the best option for what you are describing. A deep cycle battery is better suited for running your inverter over the long run. As far as that charger - it looks like it would be good for maintaing a full charge on a battery.

consider golf-cart batteries and diesel truck batteries. Heavier duty and seem to handle more charge / use cycles.

Quote:

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Originally Posted by your_comforting_company

consider golf-cart batteries and diesel truck batteries. Heavier duty and seem to handle more charge / use cycles.

---

Not sure about the diesel truck, but golf cart batteries are deep cycle batteries. Marine batteries are as well. The thing with car batteries is that they are capable of supplying a lot of amperage for starting and then they aren't used (alternator takes over and applies a charge). They will not last long with a steady drain, whereas the deep cycle batteries are designed for steady drains.

I'd go deep cycle too as they are made to be run completely down and recharged many times. I had no problem with mine for several years until I started storing them in an unheated shed through cold winters and not keeping them topped off. You need to run them down completely and cycle them a few times a year to keep em from developing a memory. If you only run em down part way and don't cycle em they will develop memory.

Some of the newer and very expensive deep cycles may not have this issue.

It's my understanding that any rechargable battery will last a long time if it never has an initial charge put to it and is stored properly. Unverified! But, once you put a charge to it the life is limited.

And remember that you are going to be severely limited in the rating of the inverter. In other words, you won't be running your air conditioner or freezer off the batteries unless your inverter is rated to draw more wattage than the appliance will draw. And then I doubt it will do so for very long. That said, we used three phase inverters at worked but I think that's a bit more than you're interested in.

By the time you spend $400 for a 5000 watt inverter, $200 a piece for a couple of deep cycle batteries and that charger you could probably buy a decent used 5000 watt generator off of Craig's List. That would run a good portion of your house minus the Heat Pump/Air conditioner.

Car batteries play a crucial role in powering your vehicle, ensuring smooth starts and operating electrical components. With advancements in battery technology, many car owners are exploring options like lithium-ion batteries for better performance and longevity. When purchasing a new battery, it’s essential to check reliable sources for feedback. Platforms like light in the box reviews offer valuable insights into various battery brands and their features. Always consider quality, warranty, and reviews before making a purchase decision.

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Using car batteries for emergency backup power can work well but there are a couple of things to keep in mind. A smart charger or maintainer is definitely helpful because it keeps the battery topped up safely without overcharging. However letting a spare battery sit for years without maintenance is not ideal since it will naturally lose charge and degrade over time so you should keep it on a maintainer occasionally to preserve its health. When the battery is properly maintained your inverters should run small appliances without issues much like rapid fuel delivery to car Dubai services that provide quick reliable help when you need power on the spot.

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