Battery charge indicators, green (4), grey (4), blue (4)
Traxxas Battery Charge Indicator Plugs make it easy to manage the charge status of your batteries. Use green for fully charged batteries, blue for LiPos that are charged for storage, and grey to indicate discharged batteries. These plugs also help protect the battery plug terminals from accumulating dirt during storage and transport.
Accessory part for these models:
1/16 E-Revo® VXL
1/16 E-Revo®
1/16 Slash 4WD
1/16 Summit™
1/18 LaTrax® Desert Prerunner
1/18 LaTrax® Rally
1/18 LaTrax® Teton®
4-Tec® 2.0 AWD Chassis
4-Tec® 2.0 VXL AWD Chassis
Bandit® VXL
Bandit®
BIGFOOT® No. 1 Officially Licensed Replica
Blast
Chevrolet® Corvette® Stingray
DCB M41 Widebody
Drag Slash
E-Revo® VXL Brushless
Factory Five '33 Hot Rod Coupe
Factory Five '35 Hot Rod Truck
Ford® F-150 Raptor
Ford® Fiesta® ST Rally
Ford® GT
Ford® Mustang GT
Hoss® 4X4 VXL
Maxx®
Rustler® 4X4 VXL
Rustler® 4X4
Rustler® VXL
Rustler®
Slash 2WD Unassembled Kit
Slash 4X4 Ultimate
Slash 4X4 VXL
Slash 4X4
Slash VXL
Slash
Sledge®
Spartan®
Stampede® 4X4 VXL
Stampede® 4X4
Stampede® VXL
Stampede®
Summit
Toyota® GR Supra GT4®
TRX-4® 1979 Chevrolet® Blazer
TRX-4® 1979 Ford® Bronco
TRX-4® Chevrolet® K10 High Trail Edition™
TRX-4® Equipped with Traxx®
TRX-4® Ford® Bronco
TRX-4® Scale and Trail™ Crawler
TRX-4® Sport Unassembled Kit
TRX-4® Sport
TRX-4® Unassembled Kit
TRX-6® Mercedes-Benz® G 63® AMG 6X6
TRX-6® Ultimate RC Hauler
Unlimited Desert Racer®
X-Maxx®
XO-1®
XRT™
Pretty useless. 
