Never Buy A New Battery Again!Car battery, usually lead acid, is 12-volt with six 2 volt cells connected in series and Marine batteries, usually deep cycle are expensive items to replace. The desulphator featured in a lot of articles using a 555 timer and some assorted capacitors and a MOSFET works well on car batteries, BUT be warned that it is advisable to do this in a Faraday cage as the interference can mess up short wave radio and PLT boxes.
After it was emptied of distilled water and recharged electricity again but without benefit, the battery became uncharitable and while charging there is still boiling water inside and rise in the temperature of the battery without there is no discharge of electricity and the use of battery.
Batteries wired in series (like a flashlight) give double the voltage (two 12 volt batteries wired in series makes 24 volts but your amperage stays constant.) To charge both batteries at the same time you need to make sure they are wired in parallel.
The set-point of the regulator has to be raised to 16 volts to avoid battery drain whilst driving, and so after starting, and within about 5 minutes, as the voltage reaches 16, I switch on the headlights to load the generator down to about 14.5 volts.
The temperature compensation ratio employed by the Deltran Battery Tender Plus battery chargers is approximately minus 3.67 millivolts per battery cell per degree Centigrade of temperature rise above 25 °C. Stated Car battery fast refurbishing nowadays another way, the output voltage of the Deltran Battery Tender Plus battery charger will drop 0.022 volts, or 22 millivolts, for every degree Centigrade temperature rise, when it is connected to a 12-volt battery.
In the event that the temperature would rise enough so that the Deltran Battery Tender Plus battery charger voltage output drops below the what would be considered a normal operating voltage for a 12 volt battery, then the Deltran Battery Tender Plus battery charger automatically disconnects itself from the battery via an internal solid state mechanism, affording an extra measure of safety in a very high temperature environment.
There are more than a billion automobile batteries, and fewer than a tiny fraction of that number of industrial batteries, in use worldwide, that are guaranteed by their makers to provide a limited service life - and there are many thousands of battery cure merchants doing their utmost to push products they insist battery users absolutely must believe will provide a much longer service life.
This website contains a lot of information about battery such as different types of batteries, steps to make them last longer, how to test one if it can be reconditioned, how to recondition batteries and finally a section on lead-acid batteries (12 v car battery).