TP-Link TBL-71A2000 battery.
Here's what you should know about it:
Type: It's a 3.7V lithium-ion battery with a capacity of 2000mAh.
Compatibility: This battery is designed for TP-Link portable Wi-Fi routers, including models like TL-TR861, TL-TR761, M5250, M5350, M7000, M7200, and M7300.
Lifespan: Under optimal conditions, a 3.7V lithium-ion battery can last for around two to three years or about 500 charge cycles. However, factors like temperature, usage, and charging habits can affect its