hello everybody I'm going to present it

today how to charge a 12 volt battery

alright so let's get started we're going

to get a once-in-a-lifetime opportunity

to join the party - no catch no money no

skills required this is the stuff that

you see on YouTube you know all that

fancy things you know phonetic nice

battery and we're gonna write down the

stuff that's written on it if you don't

have the label on the battery don't

worry

further in the video I'm going to show

you some constant value that's going to

be the same for each and every battery

yeah so don't worry don't have the label

don't worry still till the end and I'm

sure how are we gonna solve this problem

alright now we're gonna put it down what

we we have from this battle yeah

it says here 12 volt I'm gonna copy

exactly as the label says yeah 12 volts

4.5 amp hours H age and 20 H R so this

is the first label cycle use is 14 to 15

volts

standby use is 13.5 to 13.8 waltz and

that adjusted and initial current

less then one point 35 amps alright so

this is the stuff that you can find on

most lead acid batteries this stuff yeah

cycle use is this one 14 to 15 so our

vaults 14 15 stem by use this is gonna

be when the batteries is full you know

so this is not do any good for us this

is just in case of of smart charger is

gonna read this voltage and this will

tell you if is full halfway or low all

right

initial current less than one point 35

amps and this is very important because

it tells you that you don't have to go

with a charger above these 1.35 so

without going further of this we already

know that the charger of our thing

should be less than one point 35 so our

charger is X should be less than one

point 35 amps so if you have a charger

which is 0.5 amps even unto the job but

further on we can explain why so this is

the first criteria so don't go above

this value because it's written on there

now what we can find

next we have this 14.5 a H you know this

is the total capacity of the of the

battery I'm gonna write down window read

as well for you to remember anything so

4.5 a H this is the total capacity

stored in that tiny battery over there

and of course we have the time which is

28 hours means 20 hours yeah or just

simple thing

so from the battery description we find

all this information let's proceed

further on our offense so the procedure

to proceed all along we have kept this

value that we have taken from this

budget in particular for you your

battery could be different and shouldn't

be different because we don't have all

the same battery as well but the fingers

should be slightly different or slightly

the same all right in order to find out

our charger how big should be the

charger to proper charge the 12-volt

lead acid battery we know just one thing

shouldn't be less than one point 35 so

if you're going to find a charge that's

said like two amps three arms forearms

or so is no good if it's one amp and

above you're nearly there

alright so now we're gonna notify X our

unknown charger yeah as we can see here

we have a common thing h/h being the the

same units of measurement which is ours

yeah so we're gonna put this one 4.5 H

aah amp hours divided by 20

because this one is says on the on a

battery so we're gonna find out that

this one is equal to 0.2 to 5 amps yeah

so our charger to charge that particular

battery in a safe time of 20 hours it's

gonna be minimum and 0.225 amps yeah for

all this stuff if you wanna charge it

properly you're gonna go with this kind

of thing

so this is the formula to find for each

and every battery over here this is the

formula sorry this is the formula to

find your thing for this but ik battery

in particular but for any different

battery is going to be the same am

over time alright so stay tuned we're

gonna write it down find out the formula

for calculating the needed current for

our charging 12-volt battery we're going

to note with X the unknown charging

current is going to be equal with amps

which should be measured in a H note

that just plain simple amps / or / time

yeah so this is our formula for finding

each and every 12-volt battery the

needed current to calculate how big is

going to be your your charger you know

for each and every application is is

different so with the help of this

formula you're going to find out and you

can see here it's H as well so you see

the resemblance

yeah so for each and every 12 volt lead

acid battery if you can apply this

formula and you're going to know all

this stuff you're going to find the

needed charger for for the thing and you

know that should be less than one point

35 all right so let's do a proper

example now yeah all right now so if

let's have another example if just in

case you're not going to have all those

specification that I told you previously

but you know just the power of the

battery let's say your battery is what

three point five a H and that's it you

don't know the rest if you don't know

the rest we can apply other role and

some commonly available values for vols

and time now so if you don't have those

values specified on your battery a

constant voltage should be between 4 and

15 volts but you can go like fourteen

point four fourteen point two but I

prefer to go on the voided fourteen

point two volts

so this is nearly in the middle in

between those two and if you don't know

the time you can apply the formula

c14 no g14 meaning this time is a

standard charging time for lead acid

battery with unknown specification which

14 stands for hours yes so in conclusion

our formula our general formula for

calculating the charger needed for a 12

volt battery in particular should be X

the charger yeah with amps over 14 so

this is your formula in general if you

don't have any specification of the

charger of the battery and so on you can

apply this formula for T now there's a

plenty safe feature for charging a

lead-acid battery but if you want to go

more safer than this you just can

replace this one as you saw in a

previous example with 20 and that's

going to be your formula for calculating

each and every 12 volts battery now in

the future video

we're going to show you a practical way

to how to charge this tone of your

battery with the laptop charger which so

on which one is best which was is well

preferable and so on thanks for watching

don't forget to subscribe and see you on

next one and I hope to hear about you in

a comment about the board about a new

way of teaching you guys interesting

useful and always no skills required

you