Long-Endurance 4600mAh Battery Compatible for TD Tech Shock Proof BTY4000LI22 EP821 walkie Talkie,0-Cycle Li-ion Polymer,Replacement Walkie - Talkie Battery

Product information: 1. Before purchasing, please confirm your battery model again to avoid buying the wrong battery. Here is the basic information of our product. Battery model: BTY4000Li22"" Compatible Products：Compatible For TD Tech Shock Proof BTY4000LI22 EP821" 2. After replacing the battery, please consume all the power of the battery, then use the original charger to charge for 8 hours, and cycle the same operation 3-5 times to activate the properties of the battery to achieve the best use effect. 3. Please use the original charger and data cable to charge the battery. 4. Long term depletion or full charge storage can accelerate battery aging. It is recommended to keep the battery level within the range of 20% -80%. A Suggestion to Increase Battery Life : 1. Do not over discharge or idle for a long time, the battery is easy to expansion. 2. Do not keep the battery in a low battery state for a long time. Charge it if the battery level is less than 20%. 3. Do not use mobile phones or other devices while charging, as the battery life will be very short and unsafe. 4. Low temperature can make battery drum packs. 5. Do not use inferior chargers to charge the battery, in order to avoid damaging the battery. 6. Do not leave the battery in the charger for too long. 7. Do not disassemble or replace the battery structure. 8. Do not tear off the battery label."

• 【Precise compatible product model】: This battery is compatible For TD Tech Shock Proof BTY4000LI22 EP821, and the battery model is BTY4000Li22. We have tested the compatibility after making the mold and installing it in the phone. As long as you check that the product model and battery model are correct before purchasing, you can use it completely without any problems.
• 【High-capacity battery life】:The battery offers a High-capacity of 4600mAh, It is a new 0-cycle product, Longer working hours, no need for frequent charging.
• 【Safety Features】:The battery is equipped with insulating separators and IC smart chips inside,Equipped with multiple safety mechanisms like overcharge protection, over-discharge protection, short-circuit protection, and thermal management systems，It automatically reduces frequency or cuts off power in high-temperature environments, and the operating temperature range covers -20℃ to 60℃.
• 【Cycle Life & Durability】: It adopts A-class lithium-ion/polymer battery cells, featuring high energy density and long cycle life. It can withstand a large number of charge and discharge cycles without significantly reducing capacity. High-quality batteries can endure 800 to 1000 cycles or more,Retains up to 80% capacity after 800 full charge cycles.
• 【Fast Charging & Efficiency】:Adopting intelligent fast charging technology, it automatically matches the optimal current, and the charging speed can be increased by 30%，When the battery is fully charged, it will automatically cut off power to prevent battery swelling. Please use the original charger to achieve the best charging effect.