How To Install A Deep Cycle Battery In A Car

Mpfana Manu is a mechatronic engineer who's working in light-green energy electronics products.

Tin you lot apply a car bombardment?

It's pretty tempting right? A car bombardment looks very much like a deep-cycle bombardment and looks very capable of plumbing equipment perfectly in your solar ability organisation. But practise not fall for the temptation, car batteries cannot be used in a solar power system considering of item reasons y'all're going to larn in this commodity.

You're besides going to learn the consequences of including a car battery in the battery bank of your solar system and how to maintain your battery bank so that it concluding longer.

Batteries are the eye of every solar electrical system, especially when you're off the filigree. If yous can take good care of them, yous tin easily increase the lifespan of your solar organisation before it starts tripping.

And besides considering the corporeality of money you cashed in to purchase all the batteries in your bombardment bank when the organization was installed, you ought to diligently protect that investment. Replacing a failing battery in your power bank with a car battery is not an intelligent move. In fact, it will throw the initial investment down the bleed. Hither'south why.

Why a auto battery can't fit in a battery bank of a solar arrangement

Auto batteries are designed to release lots of electrical power in an instant. They can belch nearly half of all their stored energy in a few seconds. This is good when they're installed on a auto because a auto but demands significant electrical energy when its engine is starting (except for electrical cars of course).

But when information technology comes to a solar organization, batteries are required to requite a slow and steady electrical power output for a lengthy flow of time. And also, batteries should have the power to discharge upwards to 80% of the stored electrical power without significantly changing the rate of discharge.

Car batteries can't do that. Use a car battery until it's 70% discharged and you lot're almost probably going to have a difficult time recharging. Most of them need an electrical boost to start recharging normally when they've been discharged over their limit.

A totally discharged car battery may never recharge over again particularly when information technology spends a long time before getting recharged. This is how some car batteries dice. When information technology'southward installed in a machine, it speedily gets recharged past the motorcar'south alternator when the car is revved. But when it'south installed in a solar system, it'll swiftly suffer a premature death and the solar system will first tripping.

There's another more horrible reason why a motorcar battery is bad news for your solar arrangement. You know a big solar organisation doesn't run on a single battery. If a unmarried car battery is to exist installed among deep-cycle batteries making upward the whole bombardment bank, information technology'll ruin all of them as itself also gets ruined.

The characteristics of a deep-cycle and a car battery are very different. And as a issue of that, when the batteries are connected in serial/parallel one battery will discharge/recharge faster/slower. The overall effect volition be that all the batteries volition achieve a compromise level of functioning at which they piece of work as ane ability depository financial institution.

That level of operation volition be ridiculously low compared to the performance of a normal bombardment banking concern. The bombardment bank will deliver much less energy than it took when it recharged or it may never fully recharge or information technology may stop delivering power before getting fifty-fifty 50% discharged.

What exactly happens to the overall battery bank depends on the blazon of car battery and how it's continued (serial/parallel) in the battery banking concern.

Gyre to Continue

What is worse is that even when you remove the auto bombardment and replace it with a proper deep-cycle bombardment, the battery bank will still deport every bit if the automobile battery is still in use. It's in the nature of batteries to adapt, so all your batteries would have been bedridden by the motorcar battery while information technology was still in use.

The only option you'll be left with is to replace all the batteries in your bombardment banking concern. That's hundreds, if not thousands, of dollars worth of an investment forfeited.

What is the best manner to supplant batteries of a solar system?

At present that you know how horrible information technology can get if you connect a car bombardment in your power bank, it's plainly necessary that you also know the right matter to do when a single deep-cycle battery needs to exist replaced.

If your battery bank was initially set upwards by someone who had done his homework very well, all the batteries must have been of the same size and model. If one bombardment needs to be replaced, here's what yous do.

1. Check the model and size of the batteries making upwards your battery bank and write it down.
2. Calculate the age of the battery bank from the time it was initially installed. This is the historic period of all your batteries. Note it every bit well.
3. Recharge all the batteries to their maximum chapters before replacing.
4. Purchase/get a second-hand deep-cycle battery of the same model, size and age, and install it in the battery banking concern.

Battery manufacturers and DIY shops do sell 2nd-hand batteries. If you intend to get it from a manufacturer, y'all can also sell the broken battery that you desire to replace and then buy the second-hand battery. The model, size and historic period will make sure that you lot go the battery with the same characteristics every bit the balance of the batteries making up your ability bank.

Someone might inquire what happens if you buy a new battery of the same model and size. The answer is nothing happens to your power bank, it continues working as it used to. Simply the new bombardment would quickly adapt and outset behaving as the rest of the erstwhile batteries.

So all of its improved and amend properties every bit a new battery would exist waisted after several cycles of charging and discharging. That is money waisted since brand new batteries cost more than second-mitt batteries. The most cost-constructive way is to merely get a second-paw bombardment similar to those in your ability bank.

If it happens that you lot cannot find the exact model of the battery that yous need, I advice that y'all consult a battery manufacturer/engineer and ask which other model has almost the same characteristics equally the model of the rest of the batteries in your power banking company.

You can compromise on the age but it'due south safety to get a battery that is newer or of the same age as your other batteries. But do not compromise on the size. Get the exact size as the 1 you're replacing.

Tips to maintain your batteries so that they last longer

• If your batteries are flooded atomic number 82-acid batteries, cheque for the liquid level every calendar month and add together distilled water accordingly. If your battery depository financial institution recharges more frequent than once per day, check the liquid levels afterward every two weeks.
• If your batteries are continued in parallel, use a multimeter to check for the voltage across adjacent batteries. There should exist no difference in the voltage readings. The maximum voltage difference that you tin live with is 0.7V. Yous can balance the voltages using a battery charger. A voltage difference that is college than 3V indicates that a bombardment is failing. Replace the battery before information technology affects the whole power bank. Y'all tin can exercise these voltage tests every calendar month but if the system recharges and discharges oft, y'all should also do information technology ofttimes.
• After every calendar month or two, yous should shuffle the batteries. Those that were in the centre should be shifted to the ends. And those that were at the ends should be shifted to the eye.
• Check the inter-connecting cables and make sure all connections are tight and intact. Apply a layer of petroleum jelly on all connections to prevent water ingress.
• The battery bank should not be placed straight on the ground/floor. Make a wooden frame on which all the batteries can fit together. The frame should keep the batteries off the ground and so that they don't get cooled by the ground/flooring especially in wintertime.
• If your charge controller can set the limit to the extent of discharge of your batteries, keep that limit as depression as the system will still strive. Batteries that recharge after discharging fifty% of their stored energy final longer than those that recharge afterward discharging fourscore% of their stored energy.

Conclusion

Do you know what I did? I translated the complicated chemistry that happens when a automobile battery joins a solar bombardment bank into words that I promise can be understood past everyone, even folks who did no chemical science. If at that place'due south whatsoever part that's still hard to understand, don't hesitate to mutter in the comments section and I'll be more than happy to assistance you out. If all is clear and understandable, then cheers.

BRENDA ARLEDGE from Washington Court House on March 24, 2022:

Your article is very informative.

You are a good author.

Thanks for sharing.

Source: https://discover.hubpages.com/technology/Can-I-use-a-car-battery-for-my-solar-power-system

Posted by: schroederheyedidecle71.blogspot.com

Share this post