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This article describes the CHESTER-10 extension module.

Module Overview

CHESTER-X10 is a backup power supply module for CHESTER. The primary power input is an external 6-28 VDC line (VIN). The module provides also charging the single cell Li-Pol battery. Charging current is set to 450 mA. The module comes with protected single cell Li-Pol battery 3.7V 2000 mAh. Integrated ADC convertor allows to measure the input voltage (VIN / GND) and the battery voltage (BAT+ / BAT-).

Electrical Specification

  • Input voltage range (VIN): 5-28 V
  • Nominal battery voltage: 3.7 V
  • Battery charging current: 450 mA
  • Minimum recommended battery capacity: 1000 mAh.

Included Battery Specification

  • Model: LP103454-PCM-LD
  • 3.7V 2000mAh single cell Li-Po battery
  • Integrated protection circuit
  • Dimension: 56.0 x 34.5 x 10.3 mm

CHESTER Pin Configuration Diagram

Pin Configuration and Functions

PositionSignal NameSignal Description
1GNDSystem ground signal
2BAT-Battery - (*)
3BAT-Battery - (*)
4BAT+Battery + (*)
5BAT+Battery + (*)
6GNDSystem ground signal
7GNDSystem ground signal
8VINDC power supply voltage input (5-28V)

*Note: Use only a single cell 3.7V Li-Pol (or Li-Ion) battery with integrated protection circuit. Do not short circuit the battery!

Module Drawing