I have one battery charger, manual type you have to disconnect it when battery is full. it is giving probelms with acid type batteries when u forget battery dries up. My question, can I use that charger with dry type battery ? or does it give problem again like overheating etc ?please only if you have experience answer this. thanks.
Really you need the correct charger because the voltage and charge rates vary. Even if you got close, the shut off detection wouldn't work correctly if that's what you want. You can buy a charger that will shut off, it just costs a little more in fact you can buy some very nice chargers that extend the life of the batteries by eliminating any overheat issues. When dealing with cheap chargers, the only option you may have is get one that charges at very low rates. It takes much longer to charge but the risk of damage or reducing the battery life is less.
there are two types of batteries. the wet cell and the dry cell. wet cell are used in the car and it it requires hydrogen to recharge. dry cells on the other hand is actually not dry . It is made up of paste. Now in recharging dry cell battery you must first look if it is rechargeable or not. Or it has mercury content which explodes when recharged. In your question, the charger you have can be used in the dry cell as long as the battery is properly discharged.
I'm not sure what kind of battery you are working with. If you mean a dry (sealed) lead-acid battery, they will work about the same, but some batteries are not rechargeable. Whatever kind of battery you have, there is a limit on how much current you can use when recharging it, and how much total time x current you need. This depends on the amp-hour rating of the battery. If you have enough time, you can charge it at low current (trickle charge) without doing any damage, but even that depends on the size and type of battery.
You cannot use that type of charger on any type of dry battery because they are chemically different and not a reversible reaction in the way that you would be trying to reverse them. If you are trying to maintain a charge level, then it sounds like you need a trickle charger, which is just a very low amperage charger that doesn't cause the battery to get so hot and the water to evaporate. People often use inexpensive solar cells from Radio Shack for this purpose because of their low ouput. Just wire them in series until you get the same voltage as the battery. You can also find the 12 volt type that you plug into your cigarette lighter and leave on your car dash for a gentle charge. A more expensive charger senses the load your battery places on the charger and meters the juice down to avoid the problem you are experiencing, but a low-buck compromise is to get one of those $5 lamp timers that Home Depot sells for making burglers think you are home. Make sure the one you buy can handle 15 to 20 amps or about 1800 to 2400 watts, or just exceed what your charger draws according to its label plate. Start out with letting it turn on for a few minutes a day and see how it goes. Increase ON time or ON frequency as needed. Good luck.
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