EbikeSchool.com can you just solder on the nickle to the batteries

If you hotglue your cells doesnt get cooled really good and instead tear apart if one battery is faulty. Just think about that option.

You r the man......thank you so much

Thanks for your informative videos I just bought a SM8124A internal resistance meter. Many used 18650 cells read around 30 some around 100 or more and the levels seem stable. Many read a rapidly changing reading between 25 and 60 can you give us a video explaining proper expected readings.

EbikeSchool

the whole point of a spotwelder is that it stops the cell from even heating up in the first place, id only do what you said if I was soldering cells together

​@@themastereal8345but still need to melt nickel And only till 60c heated cell but still I hope it's better to do like giving gap

Thats rite

where did you go to school

Went to a school where I learned that question end with a question mark. You didn't learn that.

+Tom Miller I grew up in Antarctica. I didn't learn that in the Icelands.

Hi

Alex McRae The phrase "would have been" is proper grammar. The phrase "would of been" is not. It is common for people to confuse "would've", which is a contraction for "would have" for "would of", which is grammatically incorrect.

Chandraprakash G f*ck Google, next time I'll ask you haha

Thanks for the tip friend. I was searching for this

thanks for this

You are the MAN!!! Thanks... 💪🏻🤓🤓🤓🤓🤓🤓🤓🤓🤓👍🏻

Thanks for your teachers research papers

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@@user-oe8xe4og6t hi, thank you. Where do I contact you?

Thanks! I've got a few more coming, don't worry!

Please do a video on how to build a 36v 12a thx bro

I've got a video upcoming where I increase the voltage of a 24V 20AH battery to 36V 20AH by adding cells, hopefully that will be helpful for you!

Keep em coming! :)

ElGattoLoco- agreed. It looks like he's got them set as close as this amazing machine can be set at. I would bend them a little closer.

your post is poorly written and therefore difficult to understand.

Devices like radios connected to the battery in most vehicles experience a range of voltages. When the battery is charging the alternator maintains the system at about 14.5 volts. With the car off, the battery voltage is 12.6 (when full) At lower voltages, the current passing thru the connecting wires increases. Most devices perform better (cooler) at the higher ranges.

Hi Bruce, what you are seeing is a property of solder known as "wetting", where the solder spreads out when it reaches a certain temperature and adheres to the nickel. It might be hard to see because I sped up the video during the soldering, but rest assured all of those joints were tested and are quite strong. Regarding the RCA plug, it's only a "music plug" if you've got music going through it. Otherwise it's a generic electrical connector. These are gold plated RCA connectors that can handle up to 5A. Other RCA connectors can carry up to 15A. The outside of the barrel on the mono end is negative and the tip of the barrel is positive. This correlates with a standard in the ebike industry for using the center of RCA connectors as positive.

EbikeSchool.com very interesting, thanks!

@@EbikeSchoolwhat is the recommended charger for this battery pack?

easy to find on aliexpress or ebay. also you can do it yourself, search on UKposts - battery solder from microwave oven

Thanks.

This is where I got my spot welder goo.gl/cZS1yC

EbikeSchool.com not available anylonger

AR AD I got mine at m.aliexpress.com/item/1688174875.html on sale for $180, but I haven't actually used it yet.

Hi will these batteries work, i'm not sure because they are a lot cheaper than the other ones on ebay. www.ebay.com.au/itm/Brand-Tikon-3-7V-Rechargeable-18650-Li-ion-Lithium-Battery-Cell-Fr-Flashlight-OZ-/331328395337?var=&hash=item4d24b61849:m:mrpIJrj1oWd5miqvwQUBOXA

Hi there , Great video I'm planning on building an Ebike and I was wondering if these are a decent battery www.alibaba.com/product-detail/Hot-sale-hight-quanlity-3-7V_60169974596.html?spm=a2700.7724838.0.0.mpG9Mi

Pancake - No, I'm sorry but these aren't so good for ebike use. They cheaper chinese cells and are of questionable quality. These work fine for flashlights, but aren't appropriate for high power devices like ebikes.

Thanks for the response but were you referring to the batteries I had listed or pancakes ? or both?

Richie, sorry I thought I had tagged that. I was referring to Pancakes. Now I see yours. Those look like either knock offs of Samsung 26F cells (perfectly good but low power cells) or they are genuine but the vendor doesn't have the rights to sell them so they aren't showing the label with cell info. If they are knock offs then they are only as good as the average cheap chinese cell (not very good). If they are genuine, then they are just fine but you'll need to use enough in parallel to cover your current needs since they are low power cells rated for max 5A draw each.

Why make you own when you can buy a good one? You only need to do it once. Cycle Satiator is good.

Thanks Simon! To see how I build a 36V battery, check out this page: www.ebikeschool.com/how-to-build-a-diy-electric-bicycle-lithium-battery-from-18650-cells/

+EbikeSchool.com Got it, thanks so much for the help!

Just enjoy the free content, since then humans started bitching around everything?

Ebike School has a video: DIY 52v 10.5ah lithium battery from a kit Before I noticed that one I saw this video (off to the right) from Rinoa super genius: DIY 52v (48v) 16AH Lithium ion 18650 ... It's so funny because I have a 29" bike I'm having a hard time finding ebike supplies for and just last night I noticed 29"/700c as if it's the same thing and then I saw 28"/700c. Gotta love it. Neobattery is the place to get the batteries from $5 in lots of 40 or 100, they're on eBay and probably have their own site.

TrustInJesus111 I have 18650 batteries that I took apart from old laptop batteries. I am not 100 percent sure how to make a 48 volt 10 amp hour pack. I have soldering stuff, and spot welder just don't understand the series and parallel yet and how to get 48 volts. Lol

you just add more cells dude

26:42

Can u do simple division and round up? 48/3.7

I will second that comment! They are probably good enough to work, but definitely made using a flawed technique. Sorry to be negative :o)

Thank god it wasn't just me that noticed that. It's almost painful to watch

This vid i think was more on how the cells and bms are connected than technique. If you noticed those cells have marks from previous welds before he put the pack together

Yeah it was only the wire soldering portion haha

Tech Talk soldering heats up the cells significantly. Lithium cells don't like getting hot.

wrong! Just bread and water. Perhaps some milk as well

JarppaGuru an egg, 2 batteries, a wire and some ice cubes. But the problem: it would explode

JarppaGuru You forgot about the paperclip.

JarppaGur

Hmm, good point. People don't waste your time, he doesn't care about your questions. Moving on.

he answers some questions what's your question? you might be able to find an online forum to answer your question

Never mind I found them lol

Congratulations! you have been selected among my few giveaway winners,endeavour to reach out to claim prize....🎁

If you mean long range then you just need more cells in parallel .This battery only has 2 cells in parallel because it is for short range. If you mean long lifetime, then try to charge the battery up to only 95% or so and not drain it all the way to empty. That can double the lifetime of the battery.

EbikeSchool.com hi if we add more sell ,doesn't bring up the voltage?

Here is some info that can give you some ideas. You can use a solar charge controller with a lithium battery pack to create solar based power. I use 3 18700 cells in series connected to a small charge controller for lighting a room for 5-7 hours after sunset with a 7 watt DC bulb. A 60 watt panel works 12 months a year, with some shortages on dark winter days. In winter solar power production goes down to 10 percent of summer. For a kiosk, you must look up the power requirements of the monitor and the computer device that is connected to it, or the tablet or whatever. A power saving monitor for a kiosk can be under 10 watts. Look up one that is DC power input compatible. It will save you converting your DC power source to 110 or 220V. A stick PC can be around 10 watts. That makes around 15-20 watts for a low spec, low power kiosk computer. Add a few small DC bulbs for lighting and it comes to around 30-40 watts after sunset. Multiply 15-20 watts with daytime usage hour and multiply 30-40 watts with night time usage hours and this is your power requirement for a day. Your solar power production must cover this power requirement and your battery must be able to store enough power to run the kiosk during night time usage hours. Each cell has a watt hour rating. Once you calculate your power needs, divide this by a cell's watt hour rating to calculate the number of cells you will need in your system. Select your kiosk computer components with an eye on their power usage. Choose power saving components and this can help you build smaller batteries for your system, keeping everything simpler and far cheaper. Alternatively, you can use gel batteries which have around 450 cycle with 80 percent discharge. Use more gel batteries so that you can discharge them less and increase their lifespan.

btw you asked this 7 years ago, I just noticed that :) Hopefully, someone else can use the info :)