LTH21A 3100mAh 3.85V Li-Polymer Replacement Battery for Letv LeMax 2 X820 X822 X821 X829 Quick Charge 3.0

Description

Battery model: LTH21A
Capacity: 3100mAh (Typical) / 11.94Wh
Rated voltage: 3.85V
Charge limit voltage: 4.4V (max)
Battery type: Li-Polymer / Li-ion
Dimensions: 72.80 x 65.50 x 4.00 mm
Compatible with: Letv LeMax 2 (X820), LeEco Le Max 2 (X821, X822, X829), LeEco Le Max 2 Pro
Replaces OEM part number: LTH21A
Package include: 1 x battery
Restore the battery life of your LeEco Le Max 2 with this LTH21A 3100mAh replacement battery. Compatible with Letv LeMax 2 X820, X821, X822, X829, and LeEco Le Max 2 Pro models. Released in April 2016, the Le Max 2 features a 5.7-inch QHD display, Qualcomm Snapdragon 820 processor, 21MP rear camera, and Qualcomm Quick Charge 3.0 fast charging technology over USB Type-C. This Li-Polymer battery delivers the factory-rated 3100mAh capacity for reliable daily usage. For reference, third-party retailers sell this battery for approximately $15 to $24.
Built with high-quality Grade A Li-Polymer cells and multi-layer safety protection against overcharge, over-discharge, short circuit, overcurrent, over-voltage, and high-temperature conditions. CE, RoHS, and GB 31241-2014 certified for safe transport and use. The LTH21A battery supports Quick Charge 3.0, allowing the Le Max 2 to charge from 0% to 50% in approximately 30 minutes when paired with a compatible QC3.0 charger. With a cycle life of over 500 charges maintaining 80% capacity, this replacement battery is designed for long-term durability. For reference, third-party retailers sell this battery for approximately $15 to $24.
Compatibility Note: Please power down your device and check your original battery label before ordering. Ensure the model number printed matches LTH21A. This battery is compatible with Letv LeMax 2 models X820, X821, X822, X829, and LeEco Le Max 2 Pro. Professional installation is recommended as the phone has a sealed design with strong adhesive. The phone has no official IP water resistance rating, so water seal maintenance is not a concern after replacement.
Battery Care Tips: Avoid full discharge — keep battery level above 20%. Do not expose to high temperatures or direct sunlight. New batteries require 3-5 full charge cycles to reach optimal capacity. For best Quick Charge 3.0 performance, use a certified Quick Charge 3.0 charger. If you don’t use the battery for a long time, store it in a dry and cool place and charge it fully once every three months. If you notice swelling or overheating, stop use immediately.