BISON-GT2-5G 6150mAh 3.87V Li-ion Polymer Replacement Battery for Umidigi Bison GT2 5G Rugged Phone 18W Fast Charging

Description

Battery model: BISON-GT2-5G (compatible with Umidigi Bison GT2 5G only)
Capacity: 6150mAh / 23.80Wh
Rated voltage: 3.87V
Charge limit voltage: 4.45V
Battery type: Li-ion Polymer
Compatible with: Umidigi Bison GT2 5G (⚠️ Not for Bison GT2 4G or Bison GT2 Pro)
Package include: 1 x battery
Restore the legendary battery endurance of your Umidigi Bison GT2 5G with this BISON-GT2-5G 6150mAh replacement battery. Released in early 2022, the Umidigi Bison GT2 5G stands as one of the most capable rugged smartphones on the market, featuring the MediaTek Dimensity 900 processor built on 6nm technology, a 6.5-inch FHD+ display with 90Hz refresh rate, and IP68/IP69K dust and water resistance combined with MIL-STD-810G military-grade durability. The device’s most distinctive feature is its massive 6150mAh battery, which according to Umidigi’s official specifications delivers exceptional endurance — over 3 days of moderate usage on a single charge, approximately 13 hours of continuous video playback, and up to 27 days of 3G standby time. This high-density Li-ion Polymer cell is engineered to restore that flagship-level battery life, ensuring your Bison GT2 5G can power through multi-day outdoor adventures, field work, or intensive daily use without constantly searching for a power outlet.
18W Fast Charging & Complete Charging Ecosystem Compatibility: This BISON-GT2-5G 6150mAh battery is fully compatible with the device’s original 18W fast charging system. According to manufacturer specifications, the battery can reach significant charge levels in minimal time — approximately 30% charge in 20 minutes, 60% in about 50 minutes, and a full charge in roughly 2 hours and 15 minutes using the original charger and cable. The 6150mAh capacity is one of the largest batteries available in the rugged smartphone category, surpassing many competitors that typically offer 5000-5500mAh. For users who rely on their phone for GPS navigation, photography, or communication during extended outdoor excursions, this replacement battery restores the original fast charging speeds and ensures you’re never left without power when you need it most. The battery also supports reverse charging (OTG) functionality, allowing you to charge other devices such as earbuds or smartwatches directly from your Bison GT2 5G — a feature that proves invaluable during camping trips or emergency situations.
Advanced Battery Technology & Durability: This replacement battery utilizes high-density Li-ion Polymer cell technology, which provides several advantages over conventional lithium-ion batteries. The battery is lighter and more efficient, charges with no memory effect, and can be topped up at any time without waiting for a full discharge. Each cell is manufactured with grade A components and undergoes rigorous factory testing to ensure capacity accuracy and long-term reliability. The battery’s integrated power management circuits provide multi-layer safety protection against overcharge, over-discharge, short circuits, and temperature extremes. Independent testing has shown that high-quality replacement batteries of this type maintain over 80% of their original capacity even after 400-500 complete charge cycles, providing years of dependable service. Certified for safety compliance with CE, RoHS, and UN38.3 standards, this battery meets international shipping and safety requirements for lithium batteries.
Rugged Compatibility & Waterproofing Note: This BISON-GT2-5G battery is designed specifically for the Umidigi Bison GT2 5G (5G version only). Please note that the Bison GT2 (4G version) and Bison GT2 Pro use different battery configurations and are not compatible with this model. The Bison GT2 5G is built to withstand the harshest conditions — it is IP68 certified for immersion in up to 1.5 meters of fresh water for 30 minutes, IP69K certified for protection against high-pressure, high-temperature water jets, and MIL-STD-810G certified against drops, shocks, and extreme temperatures. If your Bison GT2 5G’s battery life has noticeably declined — draining faster than usual, shutting down unexpectedly, or failing to hold a charge — this replacement battery is the correct solution. Professional installation is strongly recommended as the device’s rugged waterproofing relies on strong adhesives and proper sealing. Third-party repair shops typically charge $20-40 for labor on rugged devices, while Umidigi’s official battery replacement service costs approximately $30-50 depending on your region.
Battery Care Tips for Extended Lifespan & Waterproof Seal Maintenance: To maximize the lifespan of your new battery, we recommend avoiding full discharges whenever possible — lithium batteries experience the least stress when kept between 20% and 80% charge. Do not expose the device to high temperatures, as leaving a rugged phone in a hot vehicle or direct sunlight for extended periods can accelerate capacity degradation. New batteries typically require 3-5 full charge-discharge cycles to reach optimal performance calibration. For best results, use the original 18W charger and cable that came with your device, as third-party chargers may not support the full charging protocol and could charge at slower speeds. When charging, avoid using the device in extreme temperatures (below 0°C or above 40°C) as this can stress the battery cells. If you notice swelling, overheating during normal use, or a sudden drop in runtime, stop using the battery immediately and consult a professional. After any battery replacement in an IP68/IP69K rated device, it is critical to ensure that the device’s seals are properly reinstalled. If you are not experienced with rugged phone repair, we strongly recommend having the battery installed by a professional repair technician who can properly reseal the device to maintain its waterproof rating. Improper sealing will permanently compromise the IP68/IP69K water and dust resistance, potentially leading to internal water damage. When not using the device for extended periods, store it at approximately 50% charge in a cool, dry environment to preserve battery health. Proper care can significantly extend the usable life of your replacement battery beyond the 90-day warranty period.