The voltage required to counteract the self discharge of the battery at a certain temperature.So it is the amount of voltage given to make the battery in fully charged condition.
A battery float charger is intended only to keep a fully charged battery from losing its charge. It will NOT work to charge a battery that is discharged or damaged. Check the voltage of the battery to be charged. Do not use charger if the battery voltage is less than 9.6 volts.
what is boost charge
Not usually, it depends on how dead the battery is. A starter requires a large amount of electricity in a very short period of time. A float charger gives a small amount of charge over a long period of time. If the battery is just shy of providing enough energy to the starter, then a float battery charger may just do the trick.
TAKE CARE with a trickle charger as a battery of that type and size will most often be over loaded by a constant charge rate of 2AMPS which is most trickle types. A "Float Mode" charger such as the Schumacher Battery Companion has a max charge rate of 1.5Amps and a peak charge voltage of about 16vdc which prevents heat build up and the high voltage is good for the battery internals without cooking your battery. You can charge the battery from a dead state with one of these and if you forget about it the charger cycles off when the voltage peaks so you don't boil your battery. The relationship between charge amps vs volts and the health of your battery internals is huge which I have not gone into here.
Unless it is a rechargeable battery you cannot charge a dry charge battery. If it is rechargeable you need to purchase a charger for that size battery. Automobile batteries are not dry charge.
The difference between a float charger and a trickle charger is that the float has circuitry to prevent overcharging. It senses when the battery voltage is at the maximum level and temporarily shuts off the charge (floats voltage at zero or a very minimal charge until it senses that the battery output voltage has fallen, then resumes charging ). You can keep it connected indefinitely. A trickle charger, on the other hand, will charge no matter whether the battery is fully charged or not. So it needs to be connected and disconnected periodically. If left in place too long it'll eventually boil the electrolyte out of the cells or damage the plates. Trickle chargers will work to keep the battery charged if used once a month or so for a day or 2, but the float chargers can be left connected indefinitely without potential harm to the battery. For example, a 24 volt battery pack, comprising 12 2-volt flooded lead-acid cells, which has been deeply discharged, would normally be restored by a boost charge of approximately 2.4 volts per cell for a short time (perhaps around 72 hours). Once the collective cell voltage reaches a surface charge of 28.8 volts (2.4 volts x 12 cells), the charge rate would be switched to the sustained lower float- charging rate of typically 2.23 volts. Eventually, with the Boost charge removed, the surface charge will diminish slightly and the battery-bank voltage will stabilise at a preset float voltage, in the case of the example above to approximately 27 volts (2.23 volts x 12).
I have a 95 Suzuki Savage LS650. To charge the battery, you need a "trickle charger". The settings you use and the amount of time you need to charge it for are in the instructions that come with the charger. It will probably take about 8 hours to charge it. Oh, and the battery will need to be out of the bike. They do make faster chargers, but the trickle charger will give you the best charge and you won't risk damaging the battery. Then to keep it charged when the bike isn't in use, I keep a "float charger" attached to it while it's installed in the bike. It's a small device that just adds a little juice as it's needed. Good luck and have a safe summer! TAKE CARE with a trickle charger as a battery of that type and size will most often be over loaded by a constant charge rate of 2AMPS which is most trickle types. A "Float Mode" charger such as the Schumacher Battery Companion has a max charge rate of 1.5Amps and a peak charge voltage of about 16vdc which prevents heat build up and the high voltage is good for the battery internals without cooking your battery. You can charge the battery from a dead state with one of these and if you forget about it the charger cycles off when the voltage peaks so you don't boil your battery. The relationship between charge amps vs volts and the health of your battery internals is huge which I have not gone into here.
No the battery don't have a magnetic charge.
how do you charge a vespa battery
No, it takes electricity to charge a battery.
The basic lead acid battery is ancient and a lot of different charge methods have been used. But one way is to charge these batteries at a float voltalge of 2.25 to 2.3 volts/cell (at 25 degrees C) (13.5V to 13.8V for a 12V battery).
A battery charges nothing it accepts a charge from the alternator.