Yes as along as it is an automatic charger that shuts down when the battery is fully charged and resumes charging when needed.
In most cases the size of a fuse is not critical and so changing from 15 to 20 amp will not effect anything - BUT the function of a fuse is to destroy itself before some more expensive component gets destroyed by too high a current flow. As you raise the current rating of your fuses you increase the chances of negating their function,
There is no such thing, 30 watts is 30 watts. "Line in" is normally about 1v peak - to - peak. So if your 30 watt amp has a "line out", no problem. An amp can be modified to have a "line out". Similarly, an amp can be modified to accept larger inputs without damage. However, driving an amp straight from the normal output of an amp, although possible, is fraught with danger and expensive consequence and should be avoided at all costs
overall
9w to 13w is not a big jump, but you need to check the fuse rating, which will have been chosen to limit the current to a safe level for the wiring, to see if the extra current is still within the fuse rating. Is this in an auto? If at 12v the current will rise from 0.75 amp to 1.08 amp. You should also check the lamp holder to see if there is a power limit stamped or printed on it.
You can use eggshells or shells
If the device can be recharged it must have a rechargeable battery. Charging it at 2 amps instead of 3 amps would mean it takes 50% longer to charge.
like you charge a car battery....use a trickle charger set to 12 volts
Yes you can
Yes, and you can use any charger on an Optima battery as long as the voltage is regulated properly. If your charger will remain on indefinitely, the voltage should be at 13.8 volts maximum with a one-amp maximum current. We would only recommend trickle charge for charge maintenance purposes only.
Not at all. A 35 amp charger is far too large to charge a lawn mower battery. Use a 10 amp automatic charger.
Best to keep the battery in the house. Make sure water level is topped up, use only demineralized water, and just use a 2 amp charger. Once a month for a couple of days is good.
Any 12 V battery charger will charge a motorcycle battery. But it is best to get one with low amperage such as a 4 to 6 amp battery charger. You can use a trickle charger to keep the battery charged on my motorcycle during storage.
Yes, you can.
The lower the amperage, the deeper the charge, but also the longer it takes. Use the 2 amp if you have the time.
Yes you can. The charger has what is called a trickle charge and will need to be left charging at least overnight and maybe for two nights dependant on how little charge the battery has left.
I watch the water from the leaky faucet trickle down.
it is so beautiful watching the water trickle from the stream.