Will this car battery charger work?

Moyglish

Asking on behalf of a friend, he spotted a 120ah car battery charger.

It charges at a rate of 0.08 amps

Can do a quick charge 3.5 amps

He wants to know if this is good enough to fully charge a battery on a 2.0 litre petrol engine car?

Thanks guys

Bpmull

Any link ?
But if it says it's capable of charging a battery upto 120 amp it should be fine. You could double check what size battery is in the car but chances are a 2.0 litre will have around a 60 amp battery certainly nothing near 120 amp anyway.

derry

Doesnt sound great value .The norm for flooded lead acid battery of cars is 10% of the capacity for charging rates . So typical 2 liter with ~60amp hour to recharge at correct rate would need ~6 amp hour battery charger .That will take about ~8 to ~10 hours hours to recharge .Maths would say ~6 hours but the charge rate starting at ~6 amps will go down until it is zero when fully charged .Then most good chargers when the battery is full will keep a service charge for this of some 0.6 amps to keep battery topped up.The specs of the charger mentioned would be good for a ~35 amp battery something small cars with 800cc engines would have . Now a 3.5 amp charger will charge 120 amp hour but will take 48 hours to that that charge up .If you think two days to charge up is fast charger well I got bridge I can sell you . Now big fast chars like 12 amps or more for fast blast charging are not cheap . often i buy several of the 3.5 amp chargers and attach to one battery of 60 or 70 amps . using 4 of these small chargers I can blast charge at 4 x 3.5 or about 14 amps .Using a volt/amp meter when the battery has risen from it low of ~10 volts to ~12.5 volts then i reduce the amount of chargers to 2 chargers until voltage hits ~13.5 to ~14 volts .Then it is fully charged and I attach only one battery charger to service the battery.So if they are selling them for 10 euros each buy 4 of them cheaper than one big charger .If not invest in one big charger
Consider to buy solar panel of 40 watts and mount on roof and park in sunny spots .Its not many amps often only ~1 amp and lot less in rainy day but it does give peak power for ~4 hours a day and 50%less from peak about ~1/2 amp for another 4 hours Thats 6 amps for the day but often enough to keep battery going
Derry

fmcg_scribe

Bpmull wrote: »

Any link ?
But if it says it's capable of charging a battery upto 120 amp it should be fine. You could double check what size battery is in the car but chances are a 2.0 litre will have around a 60 amp battery certainly nothing near 120 amp anyway.

Agreed, 120ah (amp hours) charger should be good enough for the batteries of most standard cars. For large engine cars with lots of gadgets, the amp hours of the batteries fitted are usually much higher than 120.

For jump starters/battery boosters, the requirement is slightly different. The power output of the jump starter should be as close as possible to the cold cranking amps (cca) of the battery.

The amp hours and cold cranking amps of a battery are always specified on the battery.

Esel

derry wrote: »

Doesnt sound great value .The norm for flooded lead acid battery of cars is 10% of the capacity for charging rates . So typical 2 liter with ~60amp hour to recharge at correct rate would need ~6 amp hour battery charger .That will take about ~8 to ~10 hours hours to recharge .Maths would say ~6 hours but the charge rate starting at ~6 amps will go down until it is zero when fully charged .Then most good chargers when the battery is full will keep a service charge for this of some 0.6 amps to keep battery topped up.The specs of the charger mentioned would be good for a ~35 amp battery something small cars with 800cc engines would have . Now a 3.5 amp charger will charge 120 amp hour but will take 48 hours to that that charge up .If you think two days to charge up is fast charger well I got bridge I can sell you . Now big fast chars like 12 amps or more for fast blast charging are not cheap . often i buy several of the 3.5 amp chargers and attach to one battery of 60 or 70 amps . using 4 of these small chargers I can blast charge at 4 x 3.5 or about 14 amps .Using a volt/amp meter when the battery has risen from it low of ~10 volts to ~12.5 volts then i reduce the amount of chargers to 2 chargers until voltage hits ~13.5 to ~14 volts .Then it is fully charged and I attach only one battery charger to service the battery.So if they are selling them for 10 euros each buy 4 of them cheaper than one big charger .If not invest in one big charger
Consider to buy solar panel of 40 watts and mount on roof and park in sunny spots .Its not many amps often only ~1 amp and lot less in rainy day but it does give peak power for ~4 hours a day and 50%less from peak about ~1/2 amp for another 4 hours Thats 6 amps for the day but often enough to keep battery going
Derry

Wow.

ba_barabus

derry wrote: »

Doesnt sound great value .The norm for flooded lead acid battery of cars is 10% of the capacity for charging rates . So typical 2 liter with ~60amp hour to recharge at correct rate would need ~6 amp hour battery charger .That will take about ~8 to ~10 hours hours to recharge .Maths would say ~6 hours but the charge rate starting at ~6 amps will go down until it is zero when fully charged .Then most good chargers when the battery is full will keep a service charge for this of some 0.6 amps to keep battery topped up.The specs of the charger mentioned would be good for a ~35 amp battery something small cars with 800cc engines would have . Now a 3.5 amp charger will charge 120 amp hour but will take 48 hours to that that charge up .If you think two days to charge up is fast charger well I got bridge I can sell you . Now big fast chars like 12 amps or more for fast blast charging are not cheap . often i buy several of the 3.5 amp chargers and attach to one battery of 60 or 70 amps . using 4 of these small chargers I can blast charge at 4 x 3.5 or about 14 amps .Using a volt/amp meter when the battery has risen from it low of ~10 volts to ~12.5 volts then i reduce the amount of chargers to 2 chargers until voltage hits ~13.5 to ~14 volts .Then it is fully charged and I attach only one battery charger to service the battery.So if they are selling them for 10 euros each buy 4 of them cheaper than one big charger .If not invest in one big charger
Consider to buy solar panel of 40 watts and mount on roof and park in sunny spots .Its not many amps often only ~1 amp and lot less in rainy day but it does give peak power for ~4 hours a day and 50%less from peak about ~1/2 amp for another 4 hours Thats 6 amps for the day but often enough to keep battery going
Derry

Okayyyyyyyyy