Power Banks are handy gadget where you can charge your electrical devices without the power socket.  Below are some powerful power banks for you to purchase:
1. Anker 20100mAh Portable Charger PowerCore 20100 - Ultra High Capacity Power Bank with 4.8A Output, PowerIQ Technology for iPhone, iPad & Samsung Galaxy & More – Black 
 
- Ultra-High Capacity: Weighs as little as a can of soup (12.5 oz) yet charges the iPhone 7 almost seven times, the Galaxy S6 five times or the iPad mini 4 twice.
- High-Speed Charging: PowerIQ and VoltageBoost combine to deliver the fastest possible charge(does not support Qualcomm Quick Charge). Recharges itself in 10 hours with a 2 amp charger, phone chargers (generally 1 amp) may take up to 20 hours.
- Certified Safe: Anker's MultiProtect safety system ensures complete protection for you and your devices.
- What You Get: Anker PowerCore 20100 Portable Charger, Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service. Lightning cable for iPhone / iPad sold separately.
Available at AMAZON, just click the link below for more info (Prize and more specs):
 
Anker 20100mAh Portable Charger PowerCore 20100 - Ultra High Capacity Power Bank with 4.8A Output, PowerIQ Technology for iPhone, iPad & Samsung Galaxy & More – Black 2.  Pineng PN-920 20000mAh Powerbank (White/Gray)
2.  Pineng PN-920 20000mAh Powerbank (White/Gray)  
- Capacity: 20000mAh
- Input Power:  DC 5V 2A
- Output Power :  DC 5V 1A/2.1
- Compatibility:  iPods, iPads, iPhones, Tablets and Smartphones
Available at LAZADA Philippines for more info (Prize and more Specs):  Just click 
HERE
3.  EasyAcc 20000mAh Portable Charger Fast Recharge External Battery Pack Charger
- 20000mAh High Capacity: Charge an iPhone 7 6 times, a Samsung S8 more than 4 times or an iPad Mini 3 2 times.
- Life Saver: Unique 4A Dual ports input (charger adapter not included), can be superfast recharged in 6 hours, reduce the recharging time up to 50% than usual 20000mah battery.
- Highest Output: 4.8A Output with 4 USB Ports. Auto detects and changes its charging speed unique to your device for high charging speed up to 2.4A (2 times faster than a computer USB port). Charging 4 devices simultaneously.
- Safety Protection: Effectively prevents your devices from overcharge, overcurrent and short circuits as well as conform to CE, RoHS, and FCC.
- Just One Enough On-the-Go. The Top Rated Power Bank. Outstanding customer service provides 18 months warranty.
Available at AMAZON, for more info click the link below:
 
EasyAcc 20000mAh Portable Charger Fast Recharge External Battery Pack Charger with 4A 2-Port Input 4.8A Smart Output High Capacity Power Bank for iPhone iPad Samsung Android - Black and Orange 4.  Romoss Sense 6P 20000mAh Dual Output LED Display Power Bank (White)
4.  Romoss Sense 6P 20000mAh Dual Output LED Display Power Bank (White)  
- Original ROMOSS Sense 6P 20,000mAh high capacity mobile charger external battery power bank, Dual USB ports,
- Electrical energy conversion rate is up to 90 percent, Fast and safe charging,
- 10 intelligent security protection, Smooth Aesthetic design, stylish and distinctive appearance
- Dual output with 1 fast charging 2.1A port
- 20,000 mAh Lithium-Ion battery Capacity
- Input:  DC5V2.1A / Dual Output, 1.DC5V 1A 2.DC5V 2.1A
Available at
 LAZADA PHILIPPINES:  Click 
HERE for more information
5.  LQQB Storage Power Bank 24000mah Portable Charger External Battery Pack
Available at AMAZON, For more information about the products, click the link below:
 LQQB Storage Power Bank 24000mah Portable Charger External Battery Pack(Input 2A & Output 5.5A 3-Port) with LCD display for All Smartphone Tablet& More-Black
LQQB Storage Power Bank 24000mah Portable Charger External Battery Pack(Input 2A & Output 5.5A 3-Port) with LCD display for All Smartphone Tablet& More-Black 
For more Available Power Banks at LAZADA,   Click the link below:
LAZADA PHILIPPINES