How to test the quality of your chargers with RD UM25C USB tester and RD HD35 electric load

we made this video to show you how to test the quality of your chargers
there are two ways to test
1. increase the current slowly until the max value, check if the voltage drop more than 0.5V, if so, the quality is not so good.
2.check the temperaure, if it produce a lot heat, the quality is not good as well
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Importance of Quality Laptop Accessories Like Chargers and Battery

There are various laptops & accessories which can be purchased to make your working or playing easier. You can use them when you do traveling, whenever you are at home or every time you use your laptop. Different products like laptop chargers, laptop batteries, etc. can help you make your laptop easier than using a desktop.

Today, people are using computers for a much longer time during their work, social networking requirements, or entertainment. Therefore, selecting the right laptop accessories is very important considering longer use, the health and convenience-related reasons of users, better efficiency, etc. A universal laptop charger and a battery are the key components that people require for uninterrupted working for hours.

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How do you know if a battery is good quality?

Find this battery on Amazon at:
Learn how to make your own battery with my book DIY Lithium Batteries: or check out my second book – The Ultimate DIY Ebike Guide:

The gear I use for my videos:
Camera – Nikon D5300:
Lens – Tamron 18mm – 270mm:
Thermal camera for iPhone/Android:
Drone for “follow me” filming:
Camera for invisible selfie stick shots:

Here are some of the products I use:
Bafang BBS01 kit:
Bafang BBS02 kit:
Bafang BBSHD kit:
250W complete e-bike kit:
500W complete e-bike kit:
1,000W complete e-bike kit:
36V 13Ah Hailong (shark) battery:
48V 15 Ah triangle battery:
52V 17.5 Ah triangle battery:
All ebike batteries:
All 18650 cells:
Xiaomi QiCycle:
500 Wh folding e-bike:
Weird suspension folding e-bike:
Segway ES2 scooter (AliExpress):
Segway ES2 scooter (Gearbest):
Xiaomi M365 scooter:
100W Flexible solar panel:
100W Folding solar panel:
Cycle Analyst:

The parts that I use for building batteries:
18650 cells:
18650 positive insulating washer:
Nickel strip:
Spot welder:
Silicone wire:
Black 18650 cell spacers:
Vruzend cell spacers:
Large heat shrink tubing:
Small heat shrink tubing:
Foam sheet for protecting battery:
Kapton tape:

***Question response book giveaway rules***
When you guys asks questions in the comments of my videos, I’ll try to answer them. If there are questions that I think would make a good video response, I’ll choose them to do a longer segment. If I choose your question for a video response, you’ll win a copy of my book The Ultimate DIY Ebike Guide (the paperback or the ebook), or my book DIY Lithium Batteries.
Here are some things that YouTube makes me say: This contest is not sponsored by YouTube and YouTube isn’t affiliated with it. I’m supposed to provide a link to the community guidelines for YouTube (…). YouTube is not a sponsor of this “contest” and by participating, you are releasing YouTube from any potential liability, whatever that might be. Privacy notice: I won’t steal your info. If you do win, you can choose to send me your address so I can mail you a paperback copy of the book (or some other prize if that changes) or you can send me an email address and I’ll send you a copy of the ebook. I will do everything in my power to immediately forget your personal information afterwards.

Outro Music: BenSounds

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amazon lifepo4 36v charger(good quality high price)

took for ever to get here.

sent lipo not lifepo4

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and a $25 charge at the door. avoid buying chargers on amazon!


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Ride on Ebike Headless Cross to Batchley, Redditch High quality 2 cam 1080p 120fps

New Camera so all rides on my Ebike will be this quality now, done a few videos today so have broke them down so they are not to long and will upload as soon as i have finished editing.
Joining 2 cams takes quite a while and others i have also recorded speedo so it means editing 3 videos together, i will get the hang of it lol 🙂
Video camera used in new videos
and the picture in picture cam

My video skills aint good so be patient lol
My original ebike kit
Controller i upgraded to this
Replacment Throttle

I have decided to do some giveaways things like Battery BMS, ebike battery chargers, 18650 battery chargers, It will be all prizes to do with the DIY ebike enthusiast,
To be in with a chance of winning these please Subscribe. this will start once i reach certain land marks like 100,500,1000 subscribers. and maybe when i have a video reach 1000 watch`s etc. This will be shipped world wide so don`t worry about where you are from. i wish i could ship batteries too but that is too hard to ship outside of europe
Ebike from cheap ebay kit to a hotrod 50mph.
Will be making a series of videos of how i upgraded from a £150 ebay kit to a hotrod capable of 50mph and how i built the batteries.

plus a few rides around on the bike

What inspired me to make my own was watching other ebike/battery channels
Vortex inspired me for more speed
Andy Kirby inspired me to make the lighting
Rohin super genius inspired me to go ahead and use used laptop cells and make a battery

So i am using their ideas of what they have done but doing it on a budget, My total build comes in at less than £500 but i already had the bike frame. hopefully when i have finished making all the videos on how i have built it, You will be riding something similar