BoxWave's PowerTower is a 6,000mAh Power Bank Module that has been specifically created for the Samsung Galaxy On7.
But apart from that you can try these:
1. Captcha Samsung Galaxy J7 Compatible and Certified 20000mAh Powerbank:
It has got High Capacity Dual USB Ports of 2.0A and 1.5A with a fast Charging 3.6Amp battery.
It is compatible with almost all models and versions of Samsung Smartphones.
2. LG PowerXcel RBB041PX 12000 mAh Power Bank:
It is a portable charger with Lithium Polymer Battery. It has got a Digital LCD Display that provides information on the battery capacity, its Ampere and Voltage readings.
It is a dual Output Rapid Charging Device that can charge two smart devices simultaneously because of its double output ports. These ports can discharge power at an output of 2.1A and 1A, respectively.
3. Samsung Galaxy J7 57 Compatible Certified 6000mah PowerBank:
This T Power Series Portable power bank comes with 2amp Genuine Output for faster charging.
4. PowerXcel RBB042PX 11000 mAh Power Bank
It is a High Capacity Power Bank with Powerful LED Flashlight and it is BIS Certified. This power bank has a charging capacity of 11000 mAh. It has an ergonomic design to make it portable wearing a stylish look. There are power button, indicator lights, and flashlight to ensure better user experience.
Price: Rs. 899.00
5. DEBOCK Universal Power Bank For Samsung Galaxy J7
It is a Light Weight Power Bank of 6600 mAh, with Fast Charging feature enabled and there is no Heating issue. The Power bank is compatible with almost all major smartphones and wears a smart look with sleek design.