Mini 4WD Battery Troubleshooting
Finding the best Mini 4WD battery starts with ruling out faults. Spot voltage sag, tired cells, poor terminal contact and charger problems fast.
Click to zoom
Tamiya Mini 4WD Battery Case 2(15521)
USD5.08
USD4.06
Save 20%
Out Of Stock
This product is currently unavailable.
Browse available alternatives
Secure checkout — card or Malaysian online banking.
Ships worldwide from Malaysia — fast delivery.
Description
A compact plastic case for storing and carrying spare Mini 4WD batteries. In its standard configuration it holds ten R6/AA/UM3 cells, but the internal dividers can be rearranged to instead hold four R6/AA/UM3 with ten R03/AAA/UM4 cells, or seven R6/AA/UM3 with five R03/AAA/UM4 cells, so it adapts to mixed battery types. The case is molded in slightly opaque plastic with Mini 4WD logos printed on the lid.
- Dimensions: 90 x 120 x 22mm
- Material: Polypropylene (PP)
- Holds up to 10 AA-size cells, or mixed AA/AAA configurations
It sits in Tamiya's broader case lineup alongside item 15505, the Mini 4WD Motor Case 2, which stores spare motors the same way this case stores batteries, and larger organisers such as item 15354, the Mini 4WD PRO Racer's Box, and item 15424, the Mini 4WD Portable Pit, for racers who want to carry a full pit setup rather than just spares. Printed branding on the lid makes it easy to identify in a pit box full of similar-looking cases.
Related guides
All guides →
Mini 4WD Hyper-Dash 3 Motor Guide
Hyper-Dash 3 (15477) is Tamiya's usual Mini 4WD race motor: 17,200-21,200 RPM, 1.4-1.9 mN·m, 1.6-3.0 A. Gear pairing, the PRO twin, and J-CUP 2026.
Mini 4WD Ultra-Dash Motor Guide
Ultra-Dash (15307) publishes 24,000-27,500 RPM and 4-5 A. Why official Tamiya races exclude it, what it does to AA cells, and when a club may still allow it.