7 votes

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 ...
Chuck's user avatar
  • 16.1k
4 votes
Accepted

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 ...
mactro's user avatar
  • 953
4 votes
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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 ...
Bakna's user avatar
  • 196
4 votes
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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 ...
aek8's user avatar
  • 217
4 votes
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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 ...
Chuck's user avatar
  • 16.1k
3 votes
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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, ...
Chuck's user avatar
  • 16.1k
3 votes

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 ...
Bence Kaulics's user avatar
3 votes
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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 ...
50k4's user avatar
  • 6,662
3 votes
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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 ...
Chuck's user avatar
  • 16.1k
2 votes

How to decide the battery power for my robot

The Ah rating is a measure of charge - how many amps the battery can supply, for how long. In your case you need 5A for 1 hour, and that is simply 5 Ah. You multiply the current by the time required, ...
Andy's user avatar
  • 1,051
2 votes
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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 ...
JSycamore's user avatar
  • 926
2 votes

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 ...
Joe Baker's user avatar
  • 597
2 votes
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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 ...
TechAUmNu's user avatar
  • 121
2 votes

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 ...
Bakna's user avatar
  • 196
2 votes
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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....
Matthias Goldhoorn's user avatar
2 votes

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 ...
Szczepan's user avatar
  • 450
2 votes
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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 ...
fcebron's user avatar
  • 66
2 votes
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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 ...
kolosy's user avatar
  • 282
2 votes

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, ...
TimWescott's user avatar
  • 1,891
2 votes

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 ...
Chuck's user avatar
  • 16.1k
2 votes

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 ...
r-bryan's user avatar
  • 1,271
2 votes
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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 ...
r-bryan's user avatar
  • 1,271
2 votes

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 ...
rubimat's user avatar
  • 106
2 votes

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 ...
Greenonline's user avatar
  • 1,528
1 vote
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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 ...
N. Staub's user avatar
  • 1,412
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 ...
N. Staub's user avatar
  • 1,412
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 ...
JeanMi's user avatar
  • 111
1 vote
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Proper cable to connect 12 V, DC 6 Ah batteries to Sabertooth Motor Controller for Lawnbot?

If you search for "battery quick connect" you will see for little plastic connectors that will enable you to connect/disconnect the batteries. These are not 100% necessary, yet they do make life ...
AJ.'s user avatar
  • 63
1 vote

Going around Voltage Limitation on Battery for Steppers?

I use Step-Up breakouts from SparkFun and Pololu all the time. They provide a consistent, continuous flow at the desired voltage. I recommend this one, or if you need more than 1.4A current than this ...
Bakna's user avatar
  • 196
1 vote

Battery damaged?

I'm 14, please pardon me for any rookie sentences... As far as my knowledge goes with Lithium Polymer batteries(not very far), they don't explode with a Hollywood style explosion, where flames go ...
SidS's user avatar
  • 248

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