This is the Futaba BR-2000 Battery Checker and Discharger.  This checks NiCd and NiMH receiver batteries, and 1-cell Li-Ion batteries (displays voltage only).  It also has a discharger function.  If you are a pilot, a good battery checker is essential.  This also has a load function to check the battery with.  This is a high-quality battery checker and discharger at an excellent price.  These are a great value.

Features:

• Displays voltage and charge level
• Discharge function has current load adjust from 1-3 (slow to fast) amps
• Red (danger), Orange (caution), and Blue (safe), zones on the circular graph clearly indicate voltage status
• Auto shut off, and built-in fan
• Accepts Futaba J style input plug
• Uses receiver package voltage to operate
• Can be used with 4.8, 6.0 and 7.2V packs (not with 8.4V or 9.6V Tx)
• One year limited warranty

Includes:
One Futaba Receiver Battery BR-2000
One Futaba J connector with male and female ends
Small screwdriver
Futaba warranty card
Instruction sheet

Specifications:
Length:  3"     (77mm)
Width:   3"     (77mm)
Height:  1-1/4" (26mm)
Weight: 4.40oz (125g)
Load during battery check of 4.8V pack: 150mA
6.0V pack: 72mA