Portable Power Bank-PB503

Ref Price:
Loading Port:
Payment Terms:
Min Order Qty:
Supply Capability:
103000 /month

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:

Place of Origin
China (Mainland)
Brand Name:
Model Number:
Shell material:
All Available


1.The overcharge protection function.

2. Discharge while Charge

3. Best qulity battery

4. Capacity 1800 mA& above available

5. Customized Logo,Packing


7. Switch Button: 5V/1000mA±0.5%、5V/500mA± 0.5%

8. Flash Light Function

9. Short circuit protection

Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:What is the advantage and disadvantage of having gene bank?
Q:How does the mobile power charge?
1. You rushed to a night of electricity and did not rush to the mobile power inside.
Q:i want know example of capacitive load and why we dont have inductive bank in industry?
Try this applet: fastbytes.net/demo/power_plan There are two main types of loads: resistive (incandescent lights, heaters) and inductive (induction motors, fluorescent lights). Resistive loads draw real power (W) from the source. Inductive loads draw real power and inductive reactive power (VAR) from the source. The real power does useful work, such as provide light or create torque to do work. Now, inductive reactive power is required for the loads to work (ex. creates magnetic field for induction motors), but it increases the current the source must provide. Fortunately, capacitive reactive power is opposite in polarity than inductive reactive power. Simply stated, when an inductor AND a capacitor are in a circuit, the capacitor acts a source and provides reactive power to the inductor, which decreases the reactive power the source must provide. This is power factor correction. We can achieve it with capacitor banks (VAR) or over-excited synchronous motors (W VAR) or synchronous condensers (synchronous motors driving no loads) (VAR). If no inductive loads are on, then capacitive loads draw reactive power from the source. This does nothing useful, so capacitive loads are typically activated when inductive loads are on. Play with the applet and you should see how different loads effect the source. The goal is to have MEGAVARS at 0. To answer your question. There are no inductive banks in industry, since they would waste power. Good luck
Q:Can make a power of attoney specially just for child care and not anything else?
Yes, you can make a special purpose power of attorney. Go see a lawyer to make sure you get it done right. It shouldn't cost very much, but will give you peace of mind.
Q:What is Mission and Vision of ICICI Bank?
Learn How To Improve Eyesight!
Q:Power of Attorney Question Mother has Stage 5 Alz?
You know the correct answer to this question. You need to do the right thing. Is your mother living alone? Who is paying her bills? If you are the POA, you need to make sure she is taken care of. Set up an account for her, make sure her bills are paid, and for the love of Pete, don't let her waste her money. Let her have an allowance so she still has some control.
Q:Are portable power bank allowed to be taken on board an aircraft in hand luggage?
My power bank was taken at the security check. It as in my hand luggage because at check in it was written it couldn't go at the checked bag This happen at Beijing airport but to get there from Portugal no one bothered me about it and it was on my hand bag.
Q:Running a window unit AC from a battery bank?
The only way running a window air conditioner from batteries to be practical would be if you were getting the electricity for free. Like from wind or some other power source. Otherwise you would have to use AC to charge the batteries, which would be converting 120 AC to 12 DC then have to use an inverter to convert the 12 DC to 120 AC. Ok that is all fine and good, but with each transformation you loose power. So if you plan on charging up batteries then running your AC then you would be counterproductive.
Q:What is the capacity of the mobile power?
So if you just give the smart phone backup power supply, it is recommended that you buy a capacity of 4000-5000 mA mobile power can be, those in the capacity of 8000 mA above the mobile power is actually more suitable for tablet PCs and other large battery equipment.
Q:active power vs true power?
You okorder

1. Manufacturer Overview

Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range