Questions tagged [lipo-batteries]

Use in reference to Lithium Polymer batteries, commonly used for their excellent energy density and their ability to provide large currents.

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How to calculate the ESC and the LiPo?

I would like to know how many amps the ESC needs in order to use my brushless motor, and also which LiPo battery I'm going to need. I want the know how to calculate this, so that I can do it myself ...
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3 votes
1 answer
60 views

Can I use a MJX bugs 5w battery and/or charger for the MJX Bugs 5w 4k (upgraded version)?

I am wondering if I can use the MJX bugs 5w battery for its upgraded version (MJX bugs 5w 4k) as it seems they both are the same dimensions, so it can slide into the drone. Also, I am wondering if I ...
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5 votes
1 answer
41 views

What battery/motor setup will replace this 1980s vintage glow engine?

I have a sport model (RCM Terrier, balsa/plywood construction covered with Monokote or Econokote stick/shrink film) that I built in 1984, and it has somehow come through multiple moves apparently ...
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3 votes
1 answer
46 views

Lipo battery with an ESC and a BLDC motor

I'm not sure if I can connect four brushless dc motors to my Lipo battery. I don't know how to calculate it. The brushless motor I have is the Turnigy L2210C-1200 brushless motor (150w) and the Lipo ...
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2 votes
1 answer
35 views

Is it safe/good to store a Mavic Mini 2 LiPo battery at ~18% for an unplanned next flight?

They say it is best to store at ~60% but I personally don't want to spend CC for charging it first and then discharging my battery. Note: someone said, I can just charge the battery and unplug the ...
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3 votes
2 answers
143 views

Will wiring two batteries in parallel fry my drone?

Will connecting 2 lipo batteries of 3.7 V of 1500 mAh in parallel for a power source to a drone fry it? I understand the voltage will continue to be 3.7 V because it's in parallel. The current or Amps ...
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3 votes
2 answers
36 views

Need tips on getting this to fly properly

Learning the basic concepts. Yet to use a receiver and remote. Using a 3.7 v coreless motor, lipo battery and thermocol for the frame. I figured out how to connect the motors so that diagonally ...
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  • 381
4 votes
1 answer
59 views

Pros/cons of using a BEC in traditional nitro plane?

I have recently joined a local RC club, and one of the members gifted me one of his older planes. How old? 72MHz, nitro-powered, and with Ni-Cd batteries! Old school but it works. However, I'm ...
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4 votes
2 answers
88 views

Lift off without receiver

Can I make a small drone frame achieve lift using 4 coreless 3.7 v motors of 55000 rpm, 3.7 v lipo batteries having 40c without a receiver and remote. Motors are all alike. The propellers I have are ...
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  • 381
4 votes
1 answer
44 views

Is my drone battery too large?

I'm new to the drone game. I'm building an Arducopter S500,(2015) with 2212 KV920 max 1200 gram, brushless motors, 10/45 blades, SimonK ESC's, Lipo 5200 11.1V battery, and GPS 2.8. My controller is ...
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4 votes
1 answer
63 views

Are drone batteries more prone to swelling than other li-ion batteries?

I have lithium ion batteries in my cell phones, laptops, portable chargers, and all sorts of devices. Sometimes I'll keep them off for a week or two and when I turn the device on, the charge may be ...
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3 votes
1 answer
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All motors vibrating but not spinning?

I made a 3D-printed drone body and attached some MT2204-2300kv brushless motors. I have the standard yellow 30A ESC for each of the 4 motors. I also have an Arduino Uno running YMFC-AL and a FlySky FS-...
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4 votes
2 answers
288 views

Can a 45C 11.1V 4500mah battery damage a 30A esc if a motor draws less amps?

I am really new to this, I am planning to build my own tricopter drone which can be controlled via raspberry pi using wifi and use Arduino as a flight controller to communicate via USB. I am ...
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2 votes
1 answer
83 views

Questions regarding drone components

I am wanting to build an ultra-light manned bi-copter from scratch, but I first must learn about the components, which is why I am here. I am working with a 43kv (24s rated, 192 max Amp) 70kg thrust ...
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3 votes
1 answer
120 views

Can you charge 1s and 2s batteries at the same time with the tinyhawk 2 included charger?

I just got a Tinyhawk 2. It came with 2 batteries (2s and 1s) and a battery charger that you plug in to USB. I know that you can't parallel charge batteries with different cell count, but it looks ...
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2 votes
0 answers
44 views

What are Pro and Cons of using Lithium batteries over LiPo batteries for quadcopters [duplicate]

I heard that some people combine some Panasonic 18650 (3400mah 3.7V) lithium batteries to make a battery for their drones, I was wondering of the advantages and disadvantages of using this type of set ...
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2 votes
1 answer
67 views

Can a lipo battery be charged with more than 0.5 amps? [duplicate]

Using ISDT q8 to charge my 1205mAh 6S lipo battery. I'm wondering if I can change the default settings and charge with more amps? Is this recommended or will it degrade the battery much quicker. Any ...
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7 votes
4 answers
2k views

LiPo 4S battery's output voltage higher than 14.8v

I have a LiPo 4S battery which the output should be 14.8v but it outputs, fully charged, 15.6v. The issue is that I have a voltage limit of 15v on a non-drone device that gathers data from sensors. So,...
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6 votes
1 answer
60 views

LiPo battery power maximization

I have a 3S1P 2.2A 50C battery for a drone that I build. I have a charger that looks like this: https://www.alibaba.com/product-detail/RC-B3-AC-Lipo-Battery-Charger_60812527463.html At first, when ...
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12 votes
2 answers
1k views

In what situations do puffy batteries pose a risk of ignition?

In this Drones and Model Aircraft SE question, Is it safe to fly LiPo batteries after they get "puffy"?, David O. asked if it is safe to use puffy LiPo batteries. Gparyani provided an ...
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4 votes
3 answers
960 views

Can I use two 2s lipo batteries to power my FPV DJI goggles?

The FPV DJI goggles can take 7.4-17.6 Voltage. I am using a 2S 3000mAh LiPo battery. My plan is to buy another of the same liPo battery and attach it with a female to 2 male TX60 connector, making it ...
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  • 567
8 votes
3 answers
581 views

Will LiPo batteries deteriorate outside with the temperature changes due to day-night cycle?

I am new to the hobby and I'm concerned about LiPo batteries. I live in an apartment (this is Europe, blocks of apartments are the norm in my country) so I can not put the batteries in a dedicated ...
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4 votes
1 answer
162 views

Why do LiPo batteries get puffy?

I have used many liPo batteries with my drones and other RCs over the years and have had a few of them puff up. What are the main reasons that LiPo batteries puff up? And are there ways to avoid LiPo ...
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  • 5,510
3 votes
2 answers
212 views

What LiPo C-rating is best for a small 65mm quad?

I have a small 65mm quadcopter which uses 2s batteries. Is there a recommended LiPo C-rating to get for a drone like this? Or is there some way to figure out what C-rating I should get?
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  • 5,510
3 votes
2 answers
188 views

Is there an advantage to having more LiPo cells in a low-power drone?

A major reason that high performance racing or freestyle drones use LiPo batteries with high cell count (6s rather that 3s or 4s) is so that the voltage won't sag as much. This allows high performance ...
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  • 5,510
4 votes
2 answers
405 views

Determining the mAh of 4S battery for a 3 inch drone

I have a 3" drone frame, flight controller that can take 3S or 4S LiPo, and 1507 4200KV motors. How do I find the right capacity of battery to purchase? Should I purchase 4S 850mAh or 4S 1500mAh? And ...
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  • 567
6 votes
1 answer
463 views

At what voltage per cell should I store a LiPo?

Some sources say you should store your batteries at 3.85V per cell, other says it should be 3.7V. My charger (ISDT Q6 Lite) on the "Storage" mode has a thumbs-up mark at 3.7V, probably indicating ...
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3 votes
5 answers
261 views

How to determine the largest LiPo I can use in a quadcopter?

Multirotors can usually operate with a larger battery than recommended for longer flight times but slightly less performance. However, there is a point of diminishing returns at which increasing the ...
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  • 5,510
5 votes
1 answer
167 views

Empty Cells on LiPo - Balance Charger or Battery Problem?

I recently opened up a box of 5 year old 3S LiPos which I had in storage. When I hooked them up to my Turnigy Accucel 6 80w balance charger, they mostly measured total voltages around 11v~. However, ...
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7 votes
4 answers
6k views

At what current should I charge a LiPo battery?

I have several different LiPo batteries which I use with my drones, many of them are different voltages and different capacities. How do I know at what current I should charge my drone LiPo batteries?
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  • 5,510
1 vote
0 answers
161 views

What motors, battery and ESC to use for a drone of payload >50kg?

So I am designing this octocopter which can lift up a payload of more than 50kg, min 50kg for an intra-city package delivery drone. From what I figured, with 8 motors, the safest thrust needed will be ...
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6 votes
1 answer
255 views

Is voltage sag safe if the voltage isn't too low?

I know that a liPo cell should never be below 3.0 volts, but can voltage sag during high throttle maneuvers damage the battery excessively even if the voltage it not below that level? And if that is ...
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2 votes
1 answer
468 views

How to charge LiPo batteries in series?

Is there any way to use my main charger, which can charge 2-6s batteries, to safely charge multiple 1s batteries in series? (assuming all of the batteries are the same capacity) How would I go about ...
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  • 5,510
5 votes
1 answer
617 views

Can I use LiHV batteries as normal batteries?

I have a small drone and the only batteries I can find that fit it are LiHV batteries. Can I use LiHV batteries like normal LiPo batteries? Can I just simply charge a LiHV battery to 4.2v and fly with ...
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  • 5,510
12 votes
4 answers
721 views

At what per-cell voltage should I land?

I built 5" quad and I'm using 4S 1300mAh LiPo batteries. My question is: at what voltage should I land? Let assume that I'm trying to land when my battery is as low as it should go without causing ...
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  • 579
3 votes
2 answers
546 views

Series or parallel connection for drone batteries?

What is the difference between adding two drone batteries in series vs a parallel connection for flying the drone?
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  • 5,510
8 votes
2 answers
328 views

Why do LiHV batteries degrade faster than an equivalent LiPo?

There seems to be a lot of anecdotal evidence, at least on YouTube, that LiHV batteries degrade faster than LiPos. Is this true? I own a couple whoops and only have 1s LiHV batteries since I can't ...
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9 votes
3 answers
3k views

Do low temperatures damage LiPo batteries?

I'm wondering if low temperatures affect LiPo batteries in any way? Can colder temperatures damage the cells? Can I store my batteries in bat safe box outside, in cold/hot temperatures?
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  • 579
0 votes
2 answers
83 views

Restore over-discharged LiPo batteries ~2.0V/cell [closed]

I have a LiPo battery which is ~2.0V/cell, how can I restore it safely? By "safely" I mean how can this be controlled as I know LiPo batteries can be dangerous.
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6 votes
2 answers
198 views

What are the conditions for LiPo battery damage from undervoltage?

It is widely known that Lithium-polymer cells are permanently damaged if their voltage drops below a certain threshold, around 3.0 volts, but I couldn't find much on the exact conditions and factors ...
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  • 2,897
5 votes
3 answers
66 views

How long does a LiPo battery last and how do I know if it needs replacing?

I have an old LiPo battery, how long is a LiPo battery usually supposed to last? How will one know if it needs to be replaced?
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10 votes
2 answers
217 views

How do I safely dispose of my LiPo batteries?

I have an old LiPo battery that is nearing the end of its life, how can I dispose of it safely?
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8 votes
3 answers
1k views

Alternatives to LiPo batteries

LiPo is often the first choice of battery due to its high discharge rate and high specific energy (100 - 265 Wh/kg), defined as its energy per unit mass. In terms of these two characteristics, what ...
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7 votes
1 answer
43 views

Methodology and sources for obtaining the correct replacement batteries for low-end RC aircraft

According to Mark's answer to this Drones and Model Aircraft SE question, I likely need to buy quite a few replacement LiPo batteries. Finding large LiPo batteries for expensive aircraft is usually ...
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17 votes
3 answers
1k views

How long can a LiPo pack be kept fully discharged before storage charging?

There is a reason LiPo packs are recommended to be stored at a storage charge. It is commonly known that storing a battery fully charged reduces its capacity and performance. What about storing ...
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20 votes
2 answers
648 views

Is it safe to fly LiPo batteries after they get "puffy"?

Some of my LiPo batteries got "puffy" after a few months. Is it still safe to fly them, or should I safely dispose of them?
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  • 435
11 votes
5 answers
248 views

How can I safely parallel charge my LiPo batteries?

I have multiple LiPo batteries that I want to charge up so I can get out flying as fast as (safely) possible. With my existing LiPo charger, how can I parallel charge multiple batteries at once?
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10 votes
2 answers
78 views

What is a safe amount of time a LiPo pack can be kept fully charged before it is discharged to storage capacity?

Is there any research that shows the actual decrease in capacity/performance/longevity of high discharge current LiPo batteries, like those used in quadcopters, depending on the total time they spent ...
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10 votes
4 answers
161 views

What does the C rating on a LiPo battery mean?

I see LIPO batteries specify a C rating on the label. What does that stand for and how does it affect the performance of the battery?
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7 votes
1 answer
91 views

How to restore LiPo-powered aircraft that have not been flown for years?

I have a bunch of relatively inexpensive battery-powered radio-controlled aircraft that I haven't flown in over a year. I haven't flown some of them in over 3 years. The aircraft are airplanes, ...
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