4HR3000SCU : 4.8 volt 3000mAh rechargeable NiMH battery for RC.  These are premium-quality NiMH cells (new FDK cells, same production lines as the old SANYO cells). Excellent choice for quarter-scale models or larger.

Choose pack Shape, and choose Connector (or just Wire Leads without connector) from the menu.  Cells are Sub-C size.  Each cell is approx. 1.75" tall x 0.88" diameter.  Flat pack dimensions: 3.6" long, 1.75" tall, 0.9" thick.
Square Pack dimensions: 1.75" tall, 1.8" across, 1.8" deep.(cube).  

Available connectors to choose:
(1) Just wire leads (red & black. You put your own connector on)
(1) Futaba J (FM connector, has lip running down one side)
(2) SPEkTRUM-JR PROPO-HiTEC-Airtr.Z (this one actually fits Futaba as well)
(3) AIRTRONICS old style (3 nubs).
(4) JST-GWS (red 2-pin). 
Connectors are $ 3.00 extra.
Add extra power leads with EC3 connector for $5.00 more.
Available Shapes to choose: Flat (side by side); Square; Offset.
These battery packs are manufactured in the USA by Batteries America.
Lead time for production is 1 - 2 days.