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The Baja Rey comes in two distinct scales — the 1/10 and the larger 1/6 Super Baja Rey — and they take very different battery sizes and connectors, so confirm which truck you have before buying. Losi specifies a battery tray that’s 48mm wide and 70mm tall, so check physical fit alongside voltage and connector type.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | Gens Ace 5000mAh 2S LiPo (EC3) | $25–$40 | Amazon · eBay |
| 2 | Ovonic LiPo Battery for 1/6 Baja Rey (EC5) | $50–$90 | Amazon |
| 3 | PowerHobby 3S 11.1V 5200mAh 50C (EC5) | $45–$70 | Amazon · eBay |
| 4 | Spektrum Smart Powerstage Bundle (2S) | $60–$90 | Amazon · eBay |
The picks, in detail
Gens Ace 5000mAh 2S LiPo (EC3)
A well-regarded choice specifically for the 1/10 Baja Rey, matching the truck’s stock 2S voltage and EC3 connector standard.
- 2S (7.4V) configuration
- 5000mAh capacity
- EC3 connector
- Correctly sized for the 1/10 Baja Rey out of the box
- Good capacity-to-price ratio
- Reputable Gens Ace build quality
- Not compatible with the larger 1/6 Super Baja Rey without a different battery entirely
- EC3 connector may need swapping if your ESC uses a different plug
Ovonic LiPo Battery for 1/6 Baja Rey (EC5)
Sized specifically for the larger 1/6 Super Rock Rey and Baja Rey platform, with the higher-current EC5 connector these bigger trucks need.
- Sized for 1/6-scale Baja Rey/Super Rock Rey
- EC5 connector for higher current handling
- High-discharge LiPo cells
- Purpose-sized for the larger 1/6 truck, not a generic fit
- EC5 connector handles the higher current draw of the bigger motor
- Good reputation in the RC LiPo space
- Won’t fit the smaller 1/10 Baja Rey’s battery tray
- Larger cells mean higher price than 1/10-scale batteries
PowerHobby 3S 11.1V 5200mAh 50C (EC5)
A higher-voltage 3S option confirmed compatible with the Losi Super Baja Rey, offering more power for those wanting extra performance from the 1/6 platform.
- 3S (11.1V) configuration
- 5200mAh capacity
- 50C discharge rating
- EC5 plug
- More voltage/power than a stock 2S setup for the 1/6 truck
- High 50C discharge rate supports hard acceleration
- Confirmed fitment for Super Baja Rey specifically
- Running 3S on a truck designed for 2S may require ESC/motor compatibility checks first
- Higher price than a standard 2S pack
Spektrum Smart Powerstage Bundle (2S)
An all-in-one solution combining a Smart 2S LiPo with G2 Smart Technology monitoring, built for 1/10-scale surface vehicles like the Baja Rey.
- 2S LiPo with G2 Smart Technology
- IC5 connector
- Battery health/diagnostics via compatible Spektrum chargers
- Smart charging diagnostics simplify battery health monitoring
- One-box bundle simplifies buying for beginners
- Reliable Spektrum/Horizon brand backing
- IC5 connector may require an adapter depending on your ESC
- Smart features require a compatible Spektrum smart charger to fully use
Buying tips
- Confirm your Baja Rey scale (1/10 vs. 1/6 Super Baja Rey) before ordering — the battery size, voltage, and connector standard differ significantly between them.
- Physically check battery dimensions against Losi’s 48mm-wide, 70mm-tall tray spec, especially with higher-capacity packs that can run larger than stock.
- Never exceed your ESC and motor’s rated voltage — jumping from 2S to 3S (like the PowerHobby pack) should only be done after confirming your specific truck’s electronics support it.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.