[Henry Hartmann]

First and the most important thing is you should choose the correct car charger.
Lead-acid car batteries are charged in three stages, namely: constant current, constant voltage and floating charge. When selecting a charger for your car’s battery, pick one that provides the specified charging current and voltage appropriate to the battery type.
Other types such as absorbed glass mat, gel, and flooded battery also have different charging requirements that enable them to provide good service life and optimum performance.
I’ve got the info from those sites, you might refer to those if you’re interested.

How to Charge a Car Battery

https://philkotse.com/car-maintenance/handy-tips-on-how-to-charge-and-maintain-car-battery-properly-5365
https://www.readersdigest.ca/cars/maintenance/dead-car-battery/

[Henry Hartmann]

@sonia: he did not give any info that will be useful. He is asking.

@Spruce: I think you need some things to prepare for cleaning. These are what I usually prepare for each time. Not I have a Corolla Altis 2010.
Wrench
Shop vacuum
A leaf blower or compressor
A few paintbrushes in different sizes
Metal wire brushes (also in different sizes)
A long water hose
Quality-brand degreaser
Soft microfiber towels

The steps are:
1 and most important: Let the engine cool down, seal all the reservoirs, disconnect the battery (disconnecting the negative side first and then unclipping the positive next)
2, you should cover the electrical parts of your engine with plastic to protect against contact with water. Cover the spark plugs, the coil packs, the distributor cap, all the filters, and the alternator.
3, Clean ( note: to use metal brush cause a portion of your engine is made of aluminum)
4, have a wipe down (using the towels)

[Author]

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