this article cover
- how measure battery health with voltage (below 12v reacharge or replace / jump start)
- how much time to charge a lead acid battery ampers*ah= (2a*5hours=10ah)
- car jump start 12.5 50ah battery with 12.5 14ah battery its possible
- how much volatage required start a car ideally 12v
- check alternator working or not by multimeter when car running 13v-15v.
- check lead battery dead or not by voltage: below 12v dead try recharge and test.
When to replace to car battery?
if your battery warranty is 5 years. and your battery given trouble at 4th year starting. it will likely given next few months then few weeks becuase of battery degration final stage gives unexpected trouble. if you experience smaller trouble (before frquents) and the battery warranty & life closed to end better replace:
in short: 4th year and 2nd battery drain you should replace.. 3rd may be horrible. 1st is ok.
check lead battery dead or not by voltage 12V lead acid battery
a 12V sealed lead acid battery has a voltage of 12.89V at 100% charge, while 11.63V indicates it is at 0% charge. i reacharged 10.5v battery (drained by left over light)it run for 1 year later discharged due to summer 15days store.
Check car Battery health with multimeter
a healthy battery should read between 12.6 and 12.8 volts, with readings below 12.4 volts indicating a potentially weak battery that might need charging or replacement.
while starting: a healthy battery should not drop below 10 volts when cranking the engine; if the voltage drops significantly, it indicates a weak battery that might need replacing. after starting 14v then alternator charging your car battery.
check car alternator working or not?
turn on your car, then while it’s running, use a voltmeter to measure the voltage at the battery terminals; a healthy alternator should produce a voltage between 13.5 and 14.5 volts. If the voltage is significantly lower, your alternator might not be charging the battery properly.
If your engine is running, your car battery voltage could be between 13 volts and 15 volts — but less than 16 volts.
car battery minimum voltage to start
A car battery needs at least 12 volts of power to start a vehicle. A healthy battery should have a voltage of 12.6 volts.
Voltage levels and what they mean
-
- 12.6 volts: A fully charged battery
- 12–11.4 volts: Slightly discharged, but can start most vehicles
- 11 volts or less: May start older carbureted engines, but not modern engines
- 10.8 volts or less: Generally impossible to start the car
- If the battery voltage is below 12.6 volts, try charging it with a battery charger
- If the battery voltage is below 10.8 volts, you may need to replace the battery or use a car jump starter
How to jump start car? battery compatibility
condition:
having the same voltage (usually 12V) and sufficient amperage (ah) to provide the necessary power,
ex: 12v 10ah bike battery one crank may eat 1-2ah the donor battery also dead if more cranks.
Red is positive, black is negative. Dead battery + to working battery + and working negtive + to dead battery negtive –
(remove reverse order) dead battery negative remove then working battery remove and working battery + remove then dead battery.
- Connect positive cables:Attach the red jumper cable to the positive terminal of the dead battery, then connect the other end to the positive terminal of the working battery.
- Connect negative cable:Attach the black jumper cable to the negative terminal of the working battery, then connect the other end to a bare metal surface on the dead car (not directly to the negative terminal).
- Start the donor car:Start the engine of the “donor” car and let it run for a few minutes.
- Start the dead car:Attempt to start the car with the dead battery.
- Disconnect cables: Once the dead car is started, disconnect the jumper cables in reverse order, starting with the negative connection from the dead car.
how to check car battery health without multimeter
- turn on the key and on the head light check in any dim lights
- if you experiecne more than cranks needed for starting or starting trouble is the more common symtom but .. unexpected worse thing.
car battery dead parking hot summber for 15 days without starting
battery volatage with 11v, removed car battery and started charging. i thought maybe alterator issue becuase of some rat may cut the wires. lights and mirros are ok but when cranking battery down.
You should replace your car battery after fourt to five years, or if you notice any of the signs below.
Signs your car battery needs replacing
Frequent jump starts: You need to jump start your car more often than usual
Slow engine crank: The engine cranks slowly or takes multiple tries to start
Battery warning light: The battery warning light on your dashboard is on
Swollen battery case: The battery case looks bloated or swollen
Corrosion: There is a buildup of corrosion on the battery terminals
Battery smells bad: The battery has an unpleasant odor
12v car battery charger
Fast Charging Car and Bike Battery Booster Input Voltage: 100-240V AC, 50-60Hz; Rated output: 12V DC,5-6A Max; Minimum start voltage: 8.0V; Battery range: 4-100Ah.
50ah 12.5 v battery with 11v means how much power left in there
A 50Ah 12.5V battery reading 11V likely has around 60-70% of its power remaining, indicating a moderately discharged state;
30% of 50 ah = 15 ah
to charge 10ah with 2a out how much time it takes?
Charging Time (hours) = Battery Capacity (Ah) / Charge Current (A).
so the calculation is: 10Ah / 2A = 5 hours.
10Ah / 1.2A=8.33 hours
battery started with 5a but now only charging with 1.6a
12v battery cahrging with 1.6 a good or bad?
considerable 10-25% of battery ah
how much time to charge 12v battery?
Charging time estimates
2A charger: Takes about 25 hours to charge a battery
10A charger: Takes about 5 hours to charge a battery
20A charger: Takes about 2.5 hours to charge a battery
40A charger: Takes about 30 minutes to 1 hour to charge a battery
Battery type: Lead-acid, AGM, and lithium-ion batteries have different charging requirements.
Calculation:
- Charging Time (hours) = Battery Capacity (Ah) / Charger Output (A)
Using the example:
– Charging Time = 100Ah / 10A = 10 hours
I purahcsed exactly 1 year ago when car battery drained due to left over light.after i charge with 12v bike battery using jump start cables started.
what is the full charge voltage of 12.5v car battery?
Car batteries operate between about 12v and 14v. Car alternators put out 14.4v to charge the 12v-rated battery.
When your vehicle runs, it gives the car battery voltage range reading between 13.2-14.8v. A fully charged battery is usually between 12.5V-13V, while an undercharged battery has a reading of 12.4V at 75% charge.
12.5 volt battery showing 13v
2.2v cells*6=13.2v actual resting voltage will settle after 1-2 days of being removed from the charger and lowers after being removed.
2.1*6=12.6v
Good car battery ah capacity chart
50ah battery 5 years ago now comes with 65aih 12v battery should i upgrade. why this change?
The higher Ah rating (65Ah) means the battery can deliver power for a longer duration compared to the older 50Ah battery. If your current 50Ah battery is still meeting your power needs adequately, upgrading might not be necessary.
50ah battery 6500inr while 65ah 12v exide battery 8000.
1500inr extra for 15ah..
How Long Does It Take for the Alternator to Charge the Battery?
80-amp alternator can 80ah battery in hour. thearetically ex: swift dzire alternator amp rating 5 Amps.
5*10hours=50ah battery full.
Swift dzire battery
maron DIN50 – Diesel | XL6 \ Baleno \ Swift \ Dzire \ Ciaz at 7200
SF-SONIC FFSO-FS 1440-DIN50 Battery, 12 Volts 50ah
With Old Battery (Same Ah) 5,400
Without Old Battery 6,600
55 Months (30 Months Full Replacement + 25 Months Pro Rata)
Exide Din50-50ah Mileage Car Battery 65ah also compatiable
Product Dimensions 20.5D x 19.7W x 17.5H Centimeters
amazon without old battery exchange
Swift dzire 2016 battery Dimensions
12.48v voltage
50Ah SF Sonic FS1440 DIN50
BATTERY CAPACITY :50AH
car battery Price deduction with old battery exchange
appox 1200,1500,1800 offers
maintenance free battery vs lead acid
maintenance free sealed lead acid battery 12v
A “maintenance free” battery is a type of lead-acid battery that is designed to require significantly less maintenance, primarily by being sealed and not needing regular water additions, unlike a standard lead-acid battery which needs periodic topping off with distilled water to maintain electrolyte levels; essentially, a maintenance free battery is a sealed lead-acid battery that minimizes electrolyte evaporation through its design.
Which is connected first and remove positive or negative car battery
When connecting or disconnecting a battery, you should always connect the positive terminal first and remove the negative terminal first; this helps to minimize the risk of sparks and electrical shorts.
Key points:
Connect: Positive terminal first.
Disconnect: Negative terminal first.
How many amps does a car battery need to start another car?
CCA is key: Cold Cranking Amps (CCA)
When choosing a car battery, focus on the CCA rating, which indicates the maximum current the battery can deliver for a short burst during starting. exact Amp-hour (Ah) requirement isn’t as crucial as the Cold Cranking Amps (CCA) rating.
typically need around 200 amps for the initial crank,
To start a dead car battery, you typically need between 400 and 600 amps depending on the vehicle’s engine size, with smaller engines requiring less and larger engines needing more power to jumpstart; most passenger cars fall within this range.
CCA measures how many amps a battery can deliver for 30 seconds at 0°F (-17.8°C) while maintaining a voltage of at least 7.2 volts.
A higher CCA rating means the battery is better able to start an engine in cold weather.
CCA ratings are usually displayed on the battery label.