Fortress Brand Cellphone Batteries are built with top-quality Lithium-Ion Cells which they do not require discharging, you can charge them anytime anywhere, they are fully compatible with original OEM batteries and guarantee...

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Product Review

Fortress Brand Cellphone Batteries are built with top-quality Lithium-Ion Cells which they do not require discharging, you can charge them anytime anywhere, they are fully compatible with original OEM batteries and guaranteed to meet your expectations. Once you have a backup battery you can take pictures, listen to music, text, call, watch your favorite video without worry, always keep one fully charged Fortress Brand battery for travel, camping and where the power supply is hard to reach.

Please note that these batteries come with little or no power.

This battery is exact dimension as the original battery, there is no need for special battery door.

Save our Planet, always recycle your old batteries.



  • Long lasting premium quality
  • High Capacity replacement Lithium-Ion
  • Great back up source for when you need
  • Double Your Talk and Standby Times ( Approximately)
  • Rechargeable at any time for your LG G4 or LS770, Stylo

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