What Gauge Wire Do I Need For My Amp?
|Wire Gauge Size||Total Amplifier RMS Wattage|
|0/1 AWG||1000+ Watts|
|2 AWG||1000-1500 Watts|
|4 AWG||400-1000 Watts|
|6 AWG||600-800 Watts|
What gauge wire do you need for a 1000 watt amp?
Why Use Quality Audio Wire
|Amp Kit AWG (Wire Size)||Amplifier Wattage|
|1/0 AWG||1000 Watts RMS and up|
|4 AWG||500 - 1000 Watts RMS|
|8 AWG||250 - 500 Watts RMS|
|10 AWG||Less Than 250 Watts RMS|
Attach the red, positive cable clamp on the other side of the jumper cables to the functioning vehicle's positive (+) battery terminal. Connect the black, negative cable clamp to the working battery's negative (-) battery terminal. Walk over to the car with the dead battery.
An average car battery has a capacity of around 48 amp hours which means that, fully charged, it delivers 1 amp for 48 hours, 2 amps for 24 hours, 8 amps for 6 hours and so on.
A standard small car battery is about 45 amp/hours. That means that it will supply over two amps for 20 hours. A battery should not be discharged at a higher current draw, or asked to deliver more amps than its amp/hour rating divided by 10 in order to get maximum capacity out of it.
A car battery usually holds 48 amps so if you take that it charges at approximately 1 amp per hour you can work out how long it will take to charge your battery with various amperage chargers. Charging your battery with a four amp charger will take about 12 hours to get a full charge out of this low amperage.
Once you are familiar with the basics of your battery charger, you can now connect it to the vehicle's battery. You can charge the battery while it is still inside the car or if it has been removed, either method is fine. First attach the positive (red) clamp to the positive post on the battery.
The actual resting voltage, or the voltage a battery will settle at 12-24 hours after being removed from the charger, is closer to 2.1 volts per cell, or about 6.4 volts for a 6v battery, and 12.7 volts for a 12v battery. These numbers assume 100% healthy cells, and may vary a bit lower for older batteries.
Fully charged automotive batteries should measure at 12.6 volts or above. When the engine is running, this measurement should be 13.7 to 14.7 volts. If you don't have a multimeter to tell you the voltage of your battery, you can do a test of your electrical system by starting the car and turning on the headlights.
All you need to perform the test and check if your alkaline batteries are juiced is a hard surface. Drop each battery (with the flat, negative end down) from a couple of inches up. If the battery is charged, it should make a solid thud and most likely stay standing.
Introduction: Test the Strength of a 9V Battery With Your Tongue. First inspect the battery for any noticeable signs of degradation, rust, battery acid, etc. If the battery seems reasonably clean, stick it to your tongue. You will feel a slight jolt and metallic taste.
If you divide this current into the capacity, 2750/25, you get the number of hours that the battery can sustain it: 110. If the load is 500mA, the cell's usable capacity actually drops to approximately 1500 mAh, and 1500/500 is only 3 hours. Devices like remote controls do not use continuous power.
Generally speaking, a good rule of thumb is to divide the mAh of 10000mAh power bank by the mAh of your device battery. So a 10000mAh power bank can “theoretically” charge an iPhone 4s plus from 1-100% 4.1 times (10000 / 1810 = 5.5). --iphone6/6s battery capacity is 1810 mAh.
It depends on how much current your phone processor is taking to run different apps. Capacity or charge in a battery = current * time. so your battery runs for 10 hours. If you are running only fewer apps on your phone, then the current will be less than 300 mA and the battery can run for more than 10h.
If the batteries are of the same type, i.e. both are NiMH or both are Lithium-ion, then you can use a higher capacity (i.e. higher mAh) battery instead of the lower one. The reverse is also true. Using a higher mAh rated battery will allow the device to run longer on a charge.
Larger the mAh, more capacity the portable charger will have for charging up smartphone, tablet or even Macbook. A good example is when you have a 20,000mAh power bank and another is only 3,350mAh . With no doubt, the larger capacity one is able to charge longer or higher capacity digital devices.
Batteries with larger mAh ratings generally last longer than those with smaller ratings, assuming that the batteries are subjected to the same patterns of usage, but it may not mean a better battery. The milliampere hour represents a unit of electrical charge commonly used to measure battery capacity.
Assume it has 2A input current capacity and you are using a charger compatible to meet the requirements. In this case time taken would be 10000mAh/2000ma = 5 hours as per mathematical calculations. In practical scenarios, 10k mAh power banks take around 6hrs to get fully charged using a 2A charger.
Most devices (including high-end) power banks automatically shut off power when the battery is full, but also keep trickle charging it as long as they are plugged. Overnight charging jam packs the charge in the battery and it discharges a lot slower than otherwise.
The first factor is about how much capacity your device's battery is. Generally speaking, a good rule of thumb is to divide the mAh of 20000mAh power bank by the mAh of your device battery. So a 20000mAh power bank can “theoretically” charge an iPhone 6 plus from 1-100% 6.9 times (20000 / 2915 = 6.9).
Your power bank is 20000mAh or in simple terms 20Ah. That means your poer bank can give 2Amp for 10 hours (2*10 = 20) or 1Amps for 20 hours (1*20 = 20). The hour value might change based on the C rating of the battery. No how much time will you need to charge it depends on the charging current.
How many times can a 50000 mAh power bank charge your device indeed? For instance, assume your device is an iphone 6 and the efficiency rating is 85%, you can charge your device roughly 23.48 times. The battery capacity of iphone 6 is 1810 mAh and 85% efficiency rating is on an average level.