What replacement battery fits the Rambo 750XP?

The Rambo 750XP uses a 48V Reention Dorado-style pack. Match voltage, case length and discharge connector to your original — and check whether your bike uses a smart BMS, which requires an OEM-compatible pack.

What voltage is the Rambo 750XP battery?

48 volts, verified across manufacturer specs and multiple replacement listings.

Rambo 750XP Replacement Battery — Which One Fits?

Find your version

last verified Jun 2026

48V

Rambo 750XP

removable downtube

verified · length: measure

Voltage

48 V

Case

Reention Dorado Plus

Length

measure (390 & 505 both cited)

Discharge

2-pin

Charge

DC barrel

BMS

check

⚠Always measure your pack before buying. These cases come in more than one length, and a wrong length will not seat. Measure your original end-to-end and match the discharge connector before you buy.

Schematic of a Reention Dorado e-bike battery case showing where to measure length, the connector, the voltage and model label, and the charge port. — Where to measure and check on a Reention Dorado pack.

Also fits

Cross-compatible models SAME PACK

Surface 604same Dorado family (length match)

Aventon Pace 500same Dorado family (length match)

Do not use these

⚠ Wrong-fit hazards

Conflicting length references. Sources cite both short and long Dorado for the 750XP — so measuring your own pack matters more here than usual.
Mismatched pinout. Confirm the 2-pin discharge plug.
Smart-BMS models. Confirm BMS type first.

Where to buy

Affiliate disclosure: some links below are affiliate links. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. We are not paid to recommend any specific battery.

Replacement packs

For: 48V Dorado — measure length carefully (refs conflict)

Amazon

multiple sellers · check current price & reviews

Check price →

eBay

new & refurbished

Check price →

How this was verified

Sourcing. Specs for the Rambo 750XP were cross-checked across manufacturer specifications, multiple independent replacement-battery listings, and first-hand owner reports on e-bike forums. Items marked "measure," "verify," or "check" depend on your specific unit and are not safe to assume.

verified — multi-sourceconfirm on your pack

⚠Lithium batteries can be dangerous if mismatched. This is sourced reference data with confidence levels, not a fitment guarantee. Confirm voltage, length, connector and BMS type against your own pack, and buy from a reputable seller. Read the safety guide →

Own one of these?

Help keep this page accurate. If you've replaced the battery on your Rambo 750XP, tell us what actually fit — your exact length, connector, or model year. We review every owner report and merge confirmed ones.

Owner reports are reviewed before any page is updated. Thanks for helping keep this accurate.

Which replacement battery fits a Rambo 750XP?