The equation is as follows: battery life (Wh) = battery capacity (Ah) X nominal voltage (V). Our example is thus 2 X 3.7, or 7.4 Wh. This means that the battery can produce 7.4W of power for one hour.
Full Answer
How does the battery life calculator work?
This battery life calculator estimates how long a battery will last, based on nominal battery capacity and the average current that a load is drawing from it. Battery capacity is typically measured in Amp-hours (Ah) or milliamp-hours (mAh), although Watt-hours (Wh) is occasionally used.
How to calculate current drain on a vape?
For more information on calculating current drain, take a look here … Just input the maximum power your vaping device can operate at (Wattage), Battery Low Voltage Cut-Off, Current Rating of your battery (CDR), Mod Efficiency and the number of batteries in your device and hit the calculate button.
How do I calculate the capacity of my batteries?
Just input the number of batteries you’re using, whether they’re in series or parallel, the current rating (CDR), capacity (mAh) and the voltage of your individual batteries. Hit the calculate button and our Series Vs Parallel Battery Calculator will give you the total combined voltage, CDR and capacity of your batteries!
How much power does a 2 Wh battery produce?
Using Ohm’s law and a nominal voltage of 3.7V, current capacity is easily converted to power capacity. A 2 Wh battery can deliver two Watts continuously for one hour, one Watt for two hours, etc, half a Watt for four hours, etc.
How do you calculate battery lifespan?
We use this equation for battery drain time:Battery Life (in hours) = Battery Capacity (in Ah) / Load Current (in A)P (in W) = I (in A) * V (in V)I (in A) = P (in W) / V (in V)200 Ah Battery Life = 200 Ah / 6.67 A = 30 hours.Amps Draw (in A) = 800W/ 240V = 3.33 A.200 Ah Battery Life = 200 Ah / 3.33 A = 60 hours.
How do you calculate batteries in parallel?
If you are hooking batteries up in parallel, connect all of the positive terminals together then connect all of the negative terminals together. The following formula applies to parallel circuits: (Itotal = I1+I2 etc.) This will provide you with extra current for the load, but no extra voltage (Vtotal = V1 = V2 etc.).
How do you calculate how long a battery will last with Watts?
Battery Run Time CalculatorFormula. T = 10 * a / w.Battery Capacity (Amp Hours)Power Usage (watts)
How long does a 200mah battery last?
Each type has different characteristics, advantages and disadvantages. A 200Ah lead-acid deep-cycle battery running a 400 watt DC load with 50% recommended Depth of Discharge will last for approximately 3 hours.
What happens when you connect 2 batteries in parallel?
When two identical batteries are connected in parallel it will double the current capacity and the output voltage remains the same as a single battery.
What happens when connecting two batteries of different amp-hour rating in parallel?
The basic concept is that when connecting in parallel, you add the amp hour ratings of the batteries together, but the voltage remains the same. For example: two 6 volt 4.5 Ah batteries wired in parallel are capable of providing 6 volt 9 amp hours (4.5 Ah + 4.5 Ah).
How long will 48V 20Ah battery last?
48V 20AH LITHIUM-ION BATTERY - EXTENDED RANGETechnical specifications48V 20AhPeak discharge (3 sec)90AFit for motor100W-1440WCycle life (@80%DoD)~ 800-1000Dimensions70*180*260mm13 more rows
How long will 20Ah battery last?
General SLA Batteries are usually rated at 20HR, meaning their current over a period of 20 hours. If a battery is rated at 20Ah capacity at 20HR, it means that the battery can discharge 1 Amp per hour over that 20 hour period. A High Rate Battery will typically be rated at 10HR or less.
How many hours does a 2000mah battery last?
As a simple rule of thumb, a 2,000 mAh battery will double the battery life of your iPhone 5. If you normally get 3 hours of usage then a 2,000mAh battery would extend the usage to 6 hours.
How long will a 48v 100Ah battery last?
Power (W) = Current (I) × Voltage (V) A 100Ah battery can last anywhere from 120 hours (running a 10W appliance) to 36 minutes (running a 2,000W appliance).
How do you calculate battery?
Battery life calculation formula:Battery (month) = Capacity(Ah) / 30 x I(Ah)Here the load current I(Ah) in Amps hours is equal to the total load P(W) divide by the battery voltage V(V) in volts.Hence, while increasing the load, the battery life will be reduced.
How many hours does 5000mAh battery last?
Its 5000mAh battery keeps your phone going longer without constant recharging, powering 13 hours of video viewing, 27 hours of call time, and 40 hours standby. It boasts a 90Hz refresh rate and 180Hz touch sampling rate that allows the graphics to flow really smoothly.
How long will one charge last?
A common question vape users have is: how long does a vape battery last?
What is an 18650 battery?
If someone stopped me on the street to ask if I knew what an 18650 was, I wouldn’t have a clue, even though I’ve seen them everywhere. I would probably guess it was some sort of car battery and oddly, I wouldn’t be wrong.
What is a milliampere-hour?
Batteries have a lot of specifications, one of them is the mAh. This number tells us how much energy the battery can store – the higher the number, the more energy it stores.
What is a charging cycle?
Every rechargeable battery has an average lifespan measured in charge cycles. Electronic devices like your phone, wireless headphones, and vape pen all use batteries that eventually wear out and need replacing.
What is battery health?
Like living things, batteries have an overall health that can decline for any number of reasons.
Keep Your Vape Batteries Away From Extreme Temperatures
Using or storing your vape mod in extreme heat or cold is one of the worst things that you can do for battery life and longevity. Extreme temperatures sap the power out of batteries and can cause chemical changes that reduce the batteries’ capacity permanently. A lithium-ion battery is always happiest in a cool room.
Buy a Second Pair of Batteries
One way to help your batteries last as long as possible is by giving them periodic rests instead of using them constantly. If you have only one pair of batteries for your mod, it means that you’re always either using the batteries or recharging them. If that’s the case, the batteries probably won’t last long.
Buy a Good Battery Charger
A good standalone battery charger is one of the absolute best things that you can buy if you’re a committed vaper.
Use a More Efficient Vape Tank
The final thing that you can do to improve the battery life of your vape mod is to choose vaping hardware that doesn’t generate as much of a load.
Stratm69 Senior Member
What's the quick and easy formula for determining wattage with dual or triple batteries? Is there a difference between determining wattage with series and parallel?
Baditude ECF Guru ECF Veteran
A lot of people don't understand how battery amp draw in VW devices works. Sometimes I think we're still stuck back in the mechanical and VV mod days
Stratm69 Senior Member
Someone needs to take me to school on this because I still don't understand.
lovemytank Super Member
volts x amps = watts. If batteries are stacked like in a flashlight, then they are what is called "in series". One + and one - on top of the box mod. If both + are on the top of the box mod then they are called "parallel". Now the next part.....when in series, you add up all the volts when fully charged and there is your voltage.
Hans Wermhat Vaping Master
Ugh... math class for Journeyman Electricians... the short "For Dummies" version...
lovemytank Super Member
OK, even easier. Hook it up and fire it, if it burns your eyeballs, turn it down, if you dont get a good throat hit, turn it up. I assume you are trying to figure out which mech to buy, go to a nice shop and ask them to let you try out a few on your tank. Then once you have it figured out, tip them a fiver.
93gc40 Vaping Master ECF Veteran
ZERO wattage from the mod............... ALL WATTAGE is drawn by the COIL. Here study this, Steam Engine | free vaping calculators
What does CDR mean in batteries?
CDR stands for Continuous Discharge Rating and is basically the rate at which amps can be drawn safely from a battery without it overheating. The CDR value of your batteries can be found either on the battery or in the manufacturer’s specifications.
Is vaping safe?
Battery safety is potentially the single most important aspect of vaping, regardless of the vaping device or setup you’re using. The good news is that VAPING IS SAFE as long as you understand battery safety ….
Can you use a battery with a higher CDR?
You will need to use a battery with a higher CDR value. Alternatively, if you don’t plan on EVER using the maximum wattage your device can produce, you could reduce the Vaping Power input to the maximum you’ll vape at while using the battery you have. We hope you enjoyed using our battery amp draw / drain calculator!
Can you use batteries with a lower CDR rating?
This is to make sure the batteries you use can safely deliver the power needed to vape at the maximum wattage available from your device. If you only plan on using a fraction of your mod’s available power, you could potentially use batteries with a lower CDR rating.
How much voltage does a battery have?
The voltage of the battery, which decreases as the battery drains. Using a single, fully charged, Li-ion cell, the voltage starts at around 4.2V. It quickly drops to around 3.7–3.6V as you use the mod, and stays there for a while.
What is the voltage hitting the atomizer?
The voltage hitting the atomizer is the voltage from the battery (minus the tiny voltage drop in the switch and conductors). The current flowing through the battery is the current flowing through the atomizer. A multimeter and some straightforward use of Ohm’s law you will give you all the numbers you need.
What is the difference between Ohm's law and atomizer resistance?
The difference is that they measure the atomizer resistance, and uses this measurement, and Ohm’s law, to calculate what voltage to set in order to reach your desired power. Likewise, knowing the output voltage and resistance, you can calculate the output current and power yourself.
What is input in atomizer?
Input – the battery. On the battery side, the voltage is whatever the battery has in it at the moment, just like with mech mods. The power, however, is whatever the regulator needs to pull in order to deliver the desired voltage to the atomizer at any given time.
What is an unprotected battery?
Unprotected Battery. « Back to Vapetrotter WikiAn unprotected battery is one which does not contain the protections built into it that protected batteries do. Because of the lack of these protections, they can potentially have more capacity (mAh) and current capability (amp output) than a protected battery might have.
What is an electric battery?
« Back to Vapetrotter WikiAn electric battery is a device consisting of one or more electrochemical cells with external connections provided to power electrical devices such as flashlights, smartphones, electric cars, and in our case, e-cigarettes. When a battery is supplying electric power, its positive terminal is the cathode and its negative terminal is the … Continue reading
How is the battery drain determined?
The battery drain is determined by two factors: The resistance of the atomizer, which is more or less constant after you have built your coil (s). The voltage of the battery, which decreases as the battery drains.