Question 1

Will this work on a 6 volt 12ah battery?

Accepted Answer

Yes

Question 2

Will it charge 4 v batteries?

Accepted Answer

I would not use this one there is a variable volt charger look it up and get one of those over charging can cause a catastrophic failure and even a fire

Question 3

Is this a battery or charger for a battery? Everyone that is reviewing this item are calling it a good battery. I need a charger for my kids powerwhee

Accepted Answer

This is definitely a battery charger most suitable for a sealed 6 volt lead acid battery as the description says.  That's probably exactly the kind of battery your Powerwheel has. I couldn't tell from the product description if it "floats" once the battery reaches its rated voltage. "Floating" means it cuts back once the battery is charged so as to prevent overcharging. If it doesn't, you'll have to monitor the battery voltage and disconnect it once the battery is charged. To get an idea of how long to leave it running, this charger will provide I amp per hour. So if you have a twelve amp-hour battery, it'll take at least 12 hours to charge it up if it is fully discharged. To be considered discharged means the battery has declined to 87.5% of its value (not to 0 volts!).  For a 6 volt battery this value is 5.25 volts. Full charge for a 6 volt lead battery is around 6.6 volts, but I've had good luck maintaining them at nearly 6.9 volts in my own home emergency light systems that I tinkered together about 30 years ago.  To monitor the voltage after you think the battery is charged, unhook the charger and check the battery again after it sits by itself for an hour or so. If it is somewhere around 6.3 plus or minus a couple of tenths  you should be in good shape. Four more cautions: 1) Make sure you hook positive to positive, negative to negative - sounds simplistic, but I've made this mistake a couple times and I've worked with things for years. 2) Try not to let them stay discharged for any length of time because the plates inside will deteriorate. 3) Don't overcharge them because that will dry them out and could produce too much hydrogen gas which no one wants to have around and 4) Always make sure they are well-ventilated whenever you are recharging for this reason.

Hope this isn't too much info, but I figured too much is better than too little! Good luck!

Question 4

What is the input voltage?

Accepted Answer

Just plug it in, in the US 110 volts

Manufacturer	ExpertPower
Brand	ExpertPower
Item Weight	3.53 ounces
Product Dimensions	2.85 x 1.05 x 1.64 inches
Item model number	BLMCH6_1_1
Is Discontinued By Manufacturer	No
Manufacturer Part Number	BLMCH6_1_2
Special Features	Maintenance Plus
Amperage	1 Amps
Voltage	6 Volts

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ExpertPower® 6V Charger for Sealed Lead Acid Battery 10AH 1.2AH 5AH 7AH

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