# Tag Info

## Hot answers tagged battery

### Battery damaged?

If the battery cost less than the thing you're powering, then you should probably discard the battery. If you're stubborn (or very strapped for cash) and the battery didn't catch fire when the ...
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### how to know if the LIPO battery I have is compatible with the motors and motor driver I have

You should check your driver specifications and get the battery accordingly. The driver specs you need to check: Voltage Rating The voltage range that the motor is designed to operate. Within the ...
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### Can too much input current destroy my motor driver?

You are approaching the problem from wrong side. Current capability of a battery (25C) has nothing to do with that how much current will it actually source. It is the load (motors in that case) what ...
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### Parallel connection of batteries with equal voltage but different Ah?

You aren't being specific enough. Some chemistries would possibly allow this but others would not. If the batteries have the same nominal voltage than theoretically they should work fine in parallel ...
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### How to control ESC from Arduino?

There are quite a few issues I see with your setup. You are setting up the ESC in your code to use pin 9, but your diagram shows that you've connected to pin 8. Pin 8 won't do anything because the ...
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### What battery capacity would be required to run a component for an hour?

Power (Watts, milliWatts, etc.) is given by: $$P = IV \\$$ where $I$ is current in (milli)Amps, $V$ is voltage in Volts, and $P$ is power in (milli)Watts, respectively. Energy (Watt-hours, ...
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### Tring to run 12 V DC geared motor using Samsung Li Ion ICR16850 batteries

A fully charged LiPo battery cell should has a voltage of 4.2 V. Assuming that you have three cells in series, that would give 12.6 V. When you apply a big load, this voltage of course, will decrease ...
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### Tring to run 12 V DC geared motor using Samsung Li Ion ICR16850 batteries

Assuming that the motor is in a healthy condition... Voltage is only one aspect, you have to be sure that you battery can supply the current drawn by your motor. The maximum current, according to ...
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### How to calculate battery capacity for my robot system

30 minutes is half an hour. 323.344 Watts is approximately 324 Watts. If you want 324 Watts for half an hour, then you want a (324 * 0.5) Watt-hour battery. This assumes, though, that your battery ...
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### What does internal sparking in a motor mean?

If you are using a brushed DC motor, then (hopefully) the sparks that you are seeing are a discharge between the commuter and the brushes--this is normal. Another example of this is evident in certain ...
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### battery question for DW558 Explorer (small quadrocopter)

Looking at the links you gave, the 350mAh is slightly larger dimensions than the 250mAh and seems to have the same connector. As long as it fits and has the same connector then you can put in ...
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### How to calculate battery size for servo motors?

This typically requires a bit of testing with your actual payload. You can try to model it mathematically, but it's easier and more accurate to just plug it in and measure the current draw. Current ...
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### using Li-Ion batteries in parallel

Hoo boy, let's tackle this one part at a time. Weight You're in luck! Lithium-based batteries are some of the lightest in the business! Obviously you could go lighter if you had Lithium Polymer ...
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### How should I power my servo motor with the Adafruit PCA9685 chip?

Have you tried to connect the PAD supplied with the HSB servo the fifth picture on this page? It is not necessary but in the case that your battery is fully loaded it an cause an overload if you don't ...
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### 18 MG996R servo motors control and power

Yes, there are servo controllers capable of even 24 servos. As example, check out Pololu Mini Maestro board. It communicates with RPi through USB or UART and You can find more information about that ...
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### AUV Lipo Battery capacity

You don't gave all information that are needed for such calculations. However, the technical details of the Thrusters give a peak consumption of 350 Watts each. So you have 6 of them, makes overall 2....
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### What Battery Voltage to use?

A few things going on here. First of all -- voltage != efficiency (at least not necessarily). Efficiency is really a measure of total power output which is $I \cdot V$ (where I is current). Next, your ...
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### how to get an 8 hour autonomy for an underwater robot?

Lithium Polymer batteries are, in general, the best you're going to get as far as either energy per weight or energy per volume. Going to a different brand may gain your 10% more capacity per volume, ...
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### AUV LiPo battery

If you want to run one motor at maximum output, it will draw 12.5 amps. If you run it for an hour, it will require 12.5 amp-hours of capacity. If you have six motors running for an hour at maximum ...
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### Does anyone believe a high voltage battery say 100kV is possible? If so do you have a schematic or know a seller?

They do not have 100kV batteries. They use 12-volt batteries to power a fancy dc-dc converter, which steps up the voltage to 100kV with a Cockroft-Walton voltage multiplier. Ref: the abstract of the ...
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### Alternative for a 18650 2200mAh 3.7V Li-on battery

Welcome to Robotics, Jacques. Robot cars are a fun way to start down the slippery slope attractive activity of robotics. You won't run out of things to aspire to. Is higher capacity safe? Yes. The ...
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### How to recover low voltage LiPo battery?

First: Did you measure correctly? I know its not that difficult, but 0.32 V seems very low too me, even for a dead battery if its not a very old one. If you measured correctly, I would recommend to ...
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### Can I charge a 12 Volt 2 Ampere UPS with a 9 Volt 0.6 Ampere Adapter?

The miniUPS clearly states that it takes an input of 12 V and a current greater than 1 A. The voltage of the input is the most important. Using a 9 V supply will probably not supply sufficient voltage ...
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1 vote

### Powering a robot using the 12v adapter

You have to check how much current your power adapter can draw. If i understand correctly, you need at least 12v 9.5A to make your robot work. (~8A+1.5A). The kind of power adapter you showed on the ...
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### How to create a stable 48V 10A power supply?

You indicate the need to have both a stable 24V and a stable 48V power supply from a single battery. And that you are already using a 48V to 24V buck converter to meet the stable 24V need. If you ...
1 vote

### How to create a stable 48V 10A power supply?

Usually, motors in robots are speed controlled, for example using PWM. Design your system so it meets the spec at the speed you get when the motors are running at 42V. With the supply above 42V, ...
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### How to create a stable 48V 10A power supply?

Edit: I'm not sure if a 48V - 48V boost converter will work because it won't step down my voltage when the input is over 48V. I will continue looking into this and keep you updated. From the looks of ...
1 vote

### How to get constant motor RPM regardless of battery voltage?

If your only goal is a constant speed throughout the charge cycle of the battery, you could drop the voltage to something below the low end of the battery range. If you set the voltage at 3.7 V, you'...
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### Powering multicopter with multiple dedicated batteries

I agree with lenik first statement, you idea is totally sound. Also your grounding to not have all the current drained passing through a single 'hub' is sound as otherwise you will need this central ...
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1 vote

### Compatibility of my quadcopter build

1) you 4in1 ESC as 3 outputs per motor and 1 input per motor... Your description of the brushless motor seems very confused. Brushless motor are commanded with 3 phases, theirs switching patterns ...
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