Questions tagged [battery]

An electric battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy.

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29 views

Am I calculating my drone's power consumption right?

I want to make an drone with these motors: https://www.amazon.com/XtremeAmazing-2200KV-Brushless-2212-6-helicopter/dp/B01M3UBGU9 1: First of all, are they good? If not, could you suggest me other ...
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37 views

PID to control discharging current of battery

i want to maintain battery cell voltage at specific setpoint for that i am varying discharging current by monitoring cell voltage. for that i m using https://github.com/br3ttb/Arduino-PID-Library for ...
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33 views

lucky cat - coil question

i’m building a lucky cat, these eastern cats with one of their legs waving at you all the time the system to do this is as follows: to the waving leg inside the cat is a small strong magnet attached ...
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7 views

Power Supply; using a 24V battery for a 12V and lower components (duplicate)

Instead of a separate battery for motors and electronics, one 24V SLA series connection with different converters for the 12V motors, 12V camera, 5V arduino, etc Is this a practical alternative ?
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3answers
97 views

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

I'm shopping for batteries and it's easy to find a 48V lithium ion battery that has like 30A max continuous discharge rating. However, I know that the battery supply has a variable voltage from 54V - ...
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3answers
49 views

How to get constant motor RPM regardless of battery voltage?

I have a brushless motor with a propeller attached, driven by an ESC and a LiPo battery. I noticed that as the battery level drops, the motor spins slower, which makes sense. My question is is it ...
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1answer
87 views

How should I power my servo motor with the Adafruit PCA9685 chip?

So I have an Adafruit pca9685 controlling an HSB-9380TH servo and a MG-996R servo. I recently began learning about building robot so I apologize if these questions seem dumb. I literally spent a days ...
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1answer
39 views

Powering servos for quadruped spiderbot using arduino uno [closed]

I am using 12 towerpro SG90 servos. What battery should I use for powering 12 servos for my arduino uno? Can i use the 12v battery, plug it in to 12v dc jack of arduino and tap the 5v output of ...
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1answer
138 views

18 MG996R servo motors control and power

I am currently working an a personal hexapod robot project. I am building it using 18 MG996R 4.8 to 7.2 V servo motors. I would like to use a Raspberry Pi 3 B+ to control it. I purchased a 7.4&...
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1answer
93 views

Ultra Low Power servo and controller for long usage..? [closed]

So I have an idea which would require the following: 1-4 servos 1 microcontroller some way of communicating with it via smartphone (bluetooth or wifi) Ability to run for 14 days on a small power ...
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2answers
59 views

Powering multicopter with multiple dedicated batteries

I am in the starting phase of building a fairly large octo-copter drone. I am currently thinking about the possibility of powering my octo-copter design using 4 separate batteries where each battery ...
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2answers
51 views

Compatibility of my quadcopter build

I am building my first quadcopter and have multiple questions. I am using a Crius MWC Multiwii SE 2.6 flight controller which will get input from a Raspberry Pi Zero. I have this 4in1 ESC and this ...
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1answer
54 views

how to know if the LIPO battery I have is compatible with the motors and motor driver I have

I am building a robot and I have a concern. Will it properly connect a 11.1V 30C 4500mAh to this motor driver : https://www.pololu.com/product/708 thanks in advance ..
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1answer
122 views

AUV Lipo Battery capacity

I'm making an AUV that requires 15-20 minutes of operating time. I'm using 6 of these motors (Blue Robotics T200 Thrusters) for propulsion; I'm looking for 6S lipo batteries (22.2V) but i don't know ...
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49 views

How could I make an all electric model rocket? [closed]

What I've been noodling on is how to convert that energy into thrust to create an all electric model rocket. I got as far as realizing that dumping electricity from a battery into a capacitor might ...
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1answer
27 views

Powering a robot using the 12v adapter

Hello every one hope you all alrigt I am working on a mecanum wheel robot and now I am facing a problem to afford a lipo battery which the required voltage to power my robot is 12 So I think that I ...
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1answer
352 views

DC gearmotor stall current and battery capacity

I'm working on a self-balancing robot project and am in the process of motor sizing. I've read that with self-balancing robots the motors need to switch direction quickly, which can cause them to ...
2
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1answer
56 views

What battery capacity would be required to run a component for an hour?

I have a 9.8kW Component that runs at 51.8 Volts. That means I need a battery that has about 9.8kWh of energy to run the component for an hour For the sake of simplicity, say I have some batteries ...
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2answers
91 views

using Li-Ion batteries in parallel

Looking at the Li-Ion battery packs from Servocity, part #605056, 12V, 6000maH battery pack. Any reason I shouldn't put these in parallel with each other? Any idea on what these might weigh? I've got ...
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2answers
92 views

Parallel connection of batteries with equal voltage but different Ah?

I bought some batteries for a project with the recommended voltage but too weak Ah. The batteries are to be connected in parallel. I can't currently afford to upgrade both batteries, but I was ...
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1answer
39 views

Proper cable to connect 12 V, DC 6 Ah batteries to Sabertooth Motor Controller for Lawnbot?

I am building a (fork of) the Lawnbot-400 robot found on Instructables.com and in the book Arduino Robotics. The author, while brilliant, tends to gloss over and omit details, one of those being how ...
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1answer
37 views

Going around Voltage Limitation on Battery for Steppers?

Am building a device that will use two stepper motors and a servo. One of the main requirements, is that the on-board battery cannot exceed 9.6 volts. The stepper motors have not been picked yet, and ...
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1answer
373 views

Powering a 6v servo and 12v servo

In my project, there are two types of servos ( 6v and 12v supply needs ). I need to power with the same battery. How should I go about it? Use a 6v battery with a step-up voltage regulator? How does ...
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2answers
586 views

How to calculate battery size for servo motors?

I am making a robotic device with the following servo motors. How do I go about calculating the battery capacity? It is supposed to run for 10 minutes. I am bit confused as to use the no-load current ...
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1answer
94 views

Switching from wall power to battery and back again

I'm in the final phase of my BeerBot* project, and I'm looking for the best way to power it. BeerBot will spend most of his life sitting in a docking station, keeping his battery charged and running ...
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0answers
252 views

Irobot Create 2 drawing power from Pi [closed]

I am controlling an IRobot Create 2 with a raspberry pi, which I am powering with one of these: https://www.adafruit.com/product/1566 (I know, I know, I should have just gotten power from the ...
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1answer
55 views

Qi Battery Pack [closed]

I am trying to build a bot that is "always on". I will be using a qi platform and am looking for a battery that charges through Qi. I've found several batteries that can charge your phone through Qi, ...
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2answers
66 views

Guidelines for a “stopwatch based” craft [closed]

I'm a swimmer and would like to create a small object that would help me folow my trainning plannification. In other words I want to create a custum stopwatch, with 5 colored led that will be on or ...
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1answer
57 views

battery question for DW558 Explorer (small quadrocopter)

I recently bought a DW558 Quadrocopter (http://www.gearbest.com/rc-quadcopters/pp_110531.html). After few minutes, the battery is dead. Which is understandable since the battery is so tiny. It is a 3....
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3answers
89 views

Battery damaged?

Could you please see the attached battery images and tell me if it is safe to continue using this battery or should I discard it?
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1answer
125 views

What does internal sparking in a motor mean?

My Arduino + Raspberry Pi robot was working fine in the morning. I tested it, it ran perfectly, and then I switched it off. Now in the evening when I'm trying to run it again, with the same ...
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3answers
353 views

Can too much input current destroy my motor driver?

I have a 18 V rated driver I'm using to drive two 12 V DC gear motors using my Arduino. I bought a new battery pack which is rated 3300 mAh 25C, 11.1V making the total current input 82.5 A. My driver ...
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1answer
82 views

Suggestion for correct battery pack

I am trying to run 2 12V Geared DC motors which has No-load current = 800 mA(Max), Load current = upto 9.5 A(Max). Runtime to be atleast 3-4 hours. The motor takes about 10-12 V for operation. I need ...
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2answers
135 views

Tring to run 12 V DC geared motor using Samsung Li Ion ICR16850 batteries

I am trying to run this motor. Using the batteries stated in the title. The motor requires 12 V and I am supplying 11.98V to the motor, through a motor driver. After a while, the motor keeps slowing ...
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1answer
163 views

Is my servo fried?

I got a new servo a few days back (RC Servo, Futaba FP-S148). I first tested it out with the Sweep sketch on Arduino, powering it with the Arduino 5v and GND pins only. It was working, just fine. ...
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1answer
36 views

What rating Li-Po battery should I get for this configuration?

I will have this configuration: A2212 Brushless Motor 1000KV - 4 each ECS - 30A Electronic Speed Control (ESC) - 4 each Propeller - 1045 Propeller CW & CCW Pair 10 inch * 4.5 pitch Arduino Mega ...
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2answers
241 views

How to decide the battery power for my robot

I need my motor to be powered with 12V, 5A for 1 hour continuously. How can i decide the Ah rate of the battery. Please suggest some lithium ion battery for the specification
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1answer
78 views

Create 2 light red/green

I am working on a project with the Create 2. Just recently I have run into a problem with the battery state. The Create 2 has been charging all night so its clean light shows green. However, when I ...
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2answers
275 views

Choosing a battery: is a harbor freight solar battery OK for a R/C Lawnmower?

I have built an R/C Lawnmower. I call it the Honey Badger, because it tears stuff up (that's a good thing). Well, I used used batteries to get the project going and now it's long past time to get ...
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2answers
72 views

Mobile phone power packs

For my robotics project I would like to utilise readily available mobile phone 'power banks' to simplify the power system for my robot. However, such power banks output 5V, great for the logic systems ...
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3answers
771 views

How do I create a portable solar panel lipo charger? [duplicate]

We're working on a quadcopter that will carry a solar panel on top that will continually charging the lipo battery of the quad. What's the smallest and easiest way to recreate a charger that will ...
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3answers
141 views

Quadcopter Charging

Our thesis is about Multicopter using two batteries wherein the first battery is used and when the power goes out, a switch is placed use to charge the first battery while the second battery is ...
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4answers
24k views

Does the mAh of a battery mean longer power or more power?

If a Lipo battery has more mAh will it be slower to run out of energy or will it have larger power output? Thanks in Advance
3
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3answers
353 views

Best power solution for my robot

I've built quadruped robot which is using 12 servos (TowerPro SG90 Servo) and Raspberry Pi (model B 1). Right now I'm "feeding" it with 5V 2.5A charger. How can I make it un-tethered? What should I ...
2
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3answers
207 views

Are there any Lithium Ion battery monitors designed for hobbyists (quadcopters)?

I have a friend who is getting into quadcopters and being the good techie buddy, I'm trying to find the right technology for battery monitoring so his expensive machine does not fall out of the sky ...
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1answer
1k views

How do I if know my quad is powerful enough to take off vertically smoothly and how do I calculate max Thrust(g) for given current(A) and voltage(V)?

If I build my quadcopter with the following components, will it take off vertically smoothly? Frame: F450 glass fiber and polyamide nylon [280g] Landing Gear: High Landing Gear for F450 [90g] ...
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2answers
1k views

Mechanical robustness/shock resistance LiPo batteries

How mechanically robust are LiPo batteries? How much force or acceleration can they maximally withstand before failure? What is their (mechanical) shock resistance? For some electrical components ...
2
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1answer
161 views

What charger to use with my ZIPPY Compact 6200mAh 4s 40c Lipo MultiRotor Battery [closed]

Hello I am trying to build a Quadcopter for a school project and I need to finish quick before our mission trip because I was asked to finish it before then so that I could take it. But I am having a ...
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2answers
170 views

When to use multiple batteries vs a UBEC

When should you use multiple separate batteries vs a single battery with multiple UBECs? I'm trying to design the power system for a small 2-wheeled robot. Aside from the 2 main drive motors, it also ...
2
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1answer
1k views

Using DC motor as a generator to recharge battery of my robot

I am trying to recharge my 12V lead acid battery with a 12V DC motor. I am using the battery to power the robot when it climbs. When it descends, I notice that I dont need to apply reverse voltage ...