Mobile phone chargers can be roughly divided into travel chargers, cradle chargers and maintenance chargers. Generally, users mainly contact the first two. And the most sold on the market is the travel charger.
There are also various forms of travel chargers. The common ones are the cheap duck egg-shaped miniature travel charger, the ordinary desktop card board charger, and the high-end desktop charger with crystal display. Mobile phone charger, also known as: mobile phone adapter, is actually composed of a stable power supply (mainly regulated power supply, providing stable working voltage and sufficient current) plus necessary control circuits such as constant current, voltage limiting, and time limiting. The output parameters marked on the charger (referring to the line charger): such as output 5.0V/1A, output 5.0V/1500mA-11200... refers to the relevant parameters of the internal regulated power supply. Understand this truth, you will know that a (good quality) mobile phone charger is easy to change into a good quality regulated power supply.
The chargers of lithium-ion (li-ion) batteries commonly used in mobile phones use a constant-current and voltage-limited charging system, and the charging current is generally around C2—that is, the charging rate is two hours. For example, a 500mAh is charged at 250mA in about two hours 4. Constant voltage charging after 2V.
The lion is not suitable for the -DV/DT detection fast charging method used by the NIMH advanced fast charger, because the lion has a strict limit on the charging current. Lithium ion (Li+) is very active, and high current charging is prone to danger. The general user contacts are mainly the first two. The most popular travel chargers on the market are travel chargers. There are also various forms of travel chargers. The common ones include cheap duck-egg miniature travel chargers, ordinary desktop card board chargers, and high-end desktop chargers with LCD display. device. In view of the fact that most mobile phone users are non-professional users, the chargers basically have the function of full self-stop, and most of the travel chargers are fast chargers, and the charging time is about 1-3 hours. Many chargers on the market advertise that they are controlled by microcomputers, including some very cheap duck-egg-type miniature travel chargers. In fact, strictly analyzed from the charging circuit, only a small number of chargers can be truly controlled by microcomputers (MCU control). .
Some manufacturers claim to be "microcomputer control" when they use integrated blocks on the charging circuit. In fact, many low-cost design integrated blocks are cheap op amp integrated blocks, while some dedicated charging control integrated blocks have higher unit prices. , generally used in relatively high-end or brand-name chargers. So we can't trust the so-called microcomputer control, especially the cheap products. Many products are similar in appearance but have very different internal circuits, and their performance is also very different.
Waterproof Aluminum 12V Motorbike DIN Hella QC 3.0 Dual USB Charger Power Adapter Voltmeter Switch for -BMW -Triumph Motorcycle Mobile Phone
Features: - 100%and high quality.
- This motorbike plug has been made to fit for Hella / DIN or for -BMW style motorcycle power sockets (Compatible For -BMW Motorcycle F800GS F650GS F700GS R1200GS R1200RT) and more.
- Aluminum Alloy Shell Metal CNC QC3.0 Dual USB Charger for motorcycle Hella / DIN (for B-MW style power socket).
- popular for Explorer XCA,XRX,Tiger 800,Tiger 800XC,for -Triumph,for Ducati and more motorcycle.
- For European Motorcycles such as Ducati Motorcycles and more,Two USB ports; Water resistant weather cap.
- Power / charge two mobile devices simultaneously,with on off power switch,save energy design.
- Use this plug along with your devices own USB data cable in order to charge, ideal for many GPS and smart phone devices
- There are multiple protection functions: input overvoltage, undervoltage protection; output overcurrent, overvoltage, undervoltage, and short circuit protection; reverse connection protection; internal high temperature protection.
Specifications: Item Type: Motorcycle Dual USB Charger with Switch
Material: ABS+Aluminum
Product Color: Black
LED Voltmeter display color: Blue,Red,Green(optional)
Size: 3.6x7.01cm
Input voltage: 12V-24V
Output voltage and current: 5V/3.4A;9V/2.5A;12V/2A
Quantity: 1 PC (other accessories demo in the picture is not included)
Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!!
Compare the detail sizes with yours, please allow 1-4CM differs due to manual measurement, thanks!
Package includes: 1 X QC3.0 Motorcycle Dual USB Charger Voltmeter with Switch