Add Battery 21700 5000mah https://www.yycdrones.ca/product-page/21700-5000mah-battery-for-tx16s-and-tx16s-mkii
 
Features
Improved internal circuitry and optimized power supply.
New charge circuitry with integrated reverse-polarity protection.
Optimized charge IC now allows up to 2.2A internal USB-C charge current.
Rear-mounted audio jack provided headphone output.
V4.0 Gimbal improved centering and temperature stability (Same circuitry as AG01).
Optional high/low rear grips are included for improved ergonomics.
Improved S1/S2 knobs with clear center detents.
Improved LS/RS Sliders with smoother feel and better center detents.
Redesigned battery cover for improved battery access.
Retooled body shell with improved fit and finish.
Trainer socket changed to standard TRS 3.5mm socket.
Rear DIY Socket added for personalized mods.
Improved internal plastics for better longevity.
Built-in ExpressLRS Backpack and 4in1 versions.
 
Specification
Items: TX16S Mark II Max
Size: 287x129x184mm
Weight: 750g (without battery)
Transmission frequency: 2.400GHz-2.480GHz
Transmitter module:  Option 1: Internal 4-in-1 multi-protocol module (CC2500 CYRF6936 A7105 NRF2401)； Option 2: Internal ELRS (SX1280)
SD card: 256MB by default, 8GB maximum
Antenna gain: 2db (transmit power adjustable)
Working current: 400mA
Working voltage: 6.6-8.4v DC
Radio firmware: EdgeTX
Module Firmware: Multiprotocol- Module (4IN1) -OR- ExpressLRS (ELRS)
Channels: Up to 16 channels (depending on the receiver)
Display: 4.3-inch TFT full-colour touch display with a resolution of 480 * 272
Gimbal: Option 1: V4.0 Hall sensor with Aluminium fascia;  Option 2: AG01 CNC Hall sensor
Module Bay: JR compatible module bay
Upgrade method: Supports USB-C online / SD card offline upgrade
 
Package Includes
1 * TX16S Mark II Max Radio Controller
1 * 18650 Tray
1 * USB-C Cable
1 * Screen Protector
1 pair of flat grips
1 pair of raised grips  (installed on radio by default)
1 * TX16S Key Chain
 
Purchase battery Separately https://www.yycdrones.ca/product-page/21700-5000mah-battery-for-tx16s-and-tx16s-mkii