12 volt battery with carry bag and float charger.  The 9Ah battery will provide power to your speed-timing device or full-color LED decklid display all day.  Recharging your battery with the provided float charger will help maintain the battery properly giving you extended life of your investment.
Float Charger Details:
Input: 100-240 vAC, 50-60 Hz
Output: 12 vDC, 1A
LED indicator: Red = charging. Green = Battery full
Float Charger Features:
Short circuit protection (LED goes out, charging stops)
Wrong connection protection (LED turns red, charging stops)
Battery is full (LED turns green, charging stops)
Charging time for YCG 9ah battery pack: 10 hours