How to Choose the Right EUNORAU Replacement Battery
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EUNORAU's e-bike lineup spans dozens of models, and unlike some brands, EUNORAU doesn't use one universal battery — the right replacement depends on which model you ride and how much range you want. Here's how to find the exact match.
Step 1: Confirm your model
Check your bike's frame, the sticker on your existing battery, or your original order confirmation for the exact model name (e.g. "SPECTER-S" vs "SPECTER-ST" vs "FAT-HD 1.0"). EUNORAU model names are close enough to each other that guessing can get you the wrong voltage.
Step 2: Match your model to the right battery
| EUNORAU Model(s) | Battery | Price |
|---|---|---|
| SPECTER-S / SPECTER-ST | 48V 17Ah (Samsung 35E cells) | $599 |
| FAT-HS, DEFENDER-S, DEFENDER, URUS, META20, META24 | 48V 15Ah or 17Ah | $499–$599 |
| MAX-CARGO, G20-CARGO, G30-CARGO | 48V 14Ah internal | $499 |
| FAT-HD 1.0 / FAT-HD 1.0 Pro / FAT-AWD | Reention Dorado 48V 16Ah or 25Ah (460mm) | $499–$699 |
| NEW-TRIKE 1.0/2.0, ONE-TRIKE 1.0/2.0 | Hailong Plus 48V 15Ah or 20Ah | $499–$599 |
| E-FAT-MN, E-FAT-STEP | Silver Fish 48V 12.5Ah or 17.5Ah | $299–$599 |
| Flash / Flash AWD / Flash Lite ST | 52V 21Ah or 17Ah extra battery pack | $599–$699 |
Secondary and universal batteries
If you're adding a second battery to extend range rather than replacing a dead one, EUNORAU also offers:
- Universal 48V 15Ah secondary battery ($499) — compatible with multiple models via RA4, Bullet, or XT60-F connector ports
- 48V 5Ah secondary battery with Type-C port ($219) — a smaller add-on pack for models rated 500W and below, also useful for charging phones or power banks on the go
A few things to double-check before ordering
- FAT-HD 1.0 vs 1.0 Pro vs 2.0 — the Reention Dorado listed above fits the 1.0 and 1.0 Pro; if you have the FAT-HD 2.0, check your original battery's connector type, as the 2.0 uses a dual-battery design
- Voltage matters more than capacity — Flash-series batteries run at 52V while most other EUNORAU models run at 48V; installing the wrong voltage can affect performance or damage components
- Connector type — EUNORAU uses several connector styles (RA4, Bullet, XT60-F) across its lineup; if you're unsure, check the plug on your current battery before ordering a universal replacement
Still not sure which battery you need?
If your exact model isn't listed here or you're unsure about voltage, the safest way to confirm is checking the label directly on your existing battery pack, or the model number stamped on your bike's frame near the battery mount.