Car trickle charger: Should I spend Rs 6-7K and get one

I was looking to buy the Bosch C7 as we have several vehicles and our Honda City diesel is just parked most of the time.

ViXit BHPian recently shared this with other enthusiasts.

I was looking at the Bosch C7 which costs Rs. 6570.

We have three cars and two bicycles. I’m not too worried about the two-wheelers as they have the boot layout and no other electronics on them.

Two cars see reasonable use, Safari 3 times a week and i10 once a week minimum.

But the Honda urban diesel is idle most of the time. Everything was fine throughout the lockdown, nearly 2 months without starting, but it fired on the first try.

But late last year its battery gave out and set me back 8k for the new Exide. The car had fairly regular use during the period of its first battery (SF Sonic). Its primary user is no more, so operation will be quite low for the life of its second battery.

Should I expect shorter life for the new battery now and is it worth spending 6k on a charger? I have a power outlet in my parking lot now, hence the thought.

I am thinking of the cost-benefit analysis.

How many years can the charger extend the life of my existing battery?

I’ve had 5 years of use since the first battery.

The Safari battery lasted about 6 years. The i10 battery also lasted almost 6 years.

Here is what GTO had to say about it:

You would have seen many of us happy Bosch C7 owners on the dedicated thread. I now have TWO!

Like me, you clearly have more vehicles than you need and a power outlet ready in the parking space. Dark. Forget the cost-benefit analysis because it will reward you with convenience and also save you a dead battery or two.

Here is what Indian BHPian2003 had to say about it:

A battery charger will surely save you a lot of pain when the car won’t start. You will need it if you only take short trips.

The alternator will never be able to replenish the juice you use to start the car. Using a trickle charger overnight about once a month will keep the battery healthy and give it maximum life.

You don’t need a fancy trickle charger. Just a cheap one will do.

I have 7 of them. I have so many because I forget where I put them and they reappear after a while after buying new ones. Right now I have control over 5 of them.

If you have a plug for the charger, get one.

The number of years your battery will last is like asking how long a piece of string lasts, but it will save you a lot of trouble.

Here is what BHPian androdev had to say about it:

I consider the charger to be a useful tool to keep the batteries in good condition. Extending battery life is a bonus – not sure it will save you much money unless you’re talking about BMW class cars with AGM type batteries which are expensive and don’t last long without one regular use. Flooded batteries in regular cars seem to cope better with lack of regular use.

Here is what BHPian mygodbol had to say about it:

Vehicle batteries die for one simple reason: sulphation.

Details here (it’s a sales site, so there’s a sales pitch at the end).

I first used a charger-desulfator to repair my Triumph battery, recommended and sold in 2009 by Triumph, after the new battery “died” after about six weeks of non-use.

Since then I have been using this type of charger/desulfator on all cars I have used ranging from sedan/4×4/SUV in temperatures ranging from 10 Celsius to 50 Celsius. Twice a year, early summer and early winter, I plug it in for about 48 hours and the battery is like new.

I haven’t had to change a battery due to battery drain, I had to change one after an accident in 2015 caused the battery to crack.

If you are using a trickle charger, please monitor the battery to avoid overcharging.

Check out BHPian’s comments for more ideas and information.

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