The Parrot (Polly/DP) e-bike battery series is the most popular universal downtube lithium battery solution for electric bike replacement and e-bike conversion projects in 2026. Known for its modular downtube design, built-in intelligent BMS safety system, wide voltage compatibility, and unique controller-integrated structure, the full Parrot DP battery lineup covers entry-level commuting, mid-range mountain riding, heavy-duty fat bike cruising, and high-power off-road racing scenarios, making it the best long range e-bike battery choice for most electric bike users.

Many e-bike owners and DIY conversion enthusiasts struggle to distinguish DP-5, DP-6, DP-6C, DP-9, DP-9C, and DP-21700 models, especially regarding e-bike battery range, physical size compatibility, motor matching, and applicable bike types. This comprehensive guide sorts out all official specs, real-world range data, and detailed compatible models for every Polly DP battery, helping users select the most suitable electric bike replacement battery accurately without trial and error.

2. Core Advantages of Parrot Polly DP E-Bike Batteries

Compared with ordinary vertical and rear rack e-bike batteries, the Parrot downtube e-bike battery has irreplaceable practical advantages, which is why it is widely used in mainstream electric bikes, fat bikes, and modified e-bike conversion builds worldwide:

Universal Downtube Design: Standard hanging rail structure, suitable for most folding e-bikes, mountain e-bikes, and fat bikes, easy to disassemble, charge and carry.
Dual Cell Configuration: Classic 18650 high-reliability cells and premium 21700 high-rate cells are optional, balancing cost, life, and power performance.
Optional Controller Integrated Version: Exclusive DP-6C and DP-9C models feature a built-in controller compartment, the most practical controller integrated e-bike battery solution that perfectly solves the space problem of e-bike conversion modification.
Complete Voltage & Capacity Coverage: Supports mainstream 36V, 48V, 52V, and custom 60V options, covering 250W–1500W full-power motors. These versatile 48V/52V lithium e-bike battery variants fit nearly all consumer and modified e-bikes.
Safe & Durable: Equipped with intelligent BMS protection board, overcharge, overdischarge, overcurrent, short circuit and high-temperature protection, IP54 waterproof and dustproof, suitable for daily commuting and outdoor off-road.

3. Full Parrot DP Battery Series: Specs, Range & Compatible Bike Models

This chapter comprehensively sorts out all 6 mainstream models of the Parrot DP battery series, including precise size parameters, 18650 and 21700 cell configurations, voltage and capacity grades, real measured e-bike battery range, matching motor power, and detailed applicable e-bike types for replacement and conversion use.

3.1 DP-5 (YW5 / Parrot 5#) — Compact Entry-Level Commuter Battery

Positioning: Lightweight, portable, cost-effective daily commuting battery

Physical Parameters: 370 × 90 × 110mm | Max 56pcs 18650 cells

Voltage & Capacity & Real Range:

36V 10Ah (360Wh): 25–35km range
36V 13Ah (468Wh): 35–45km range
48V 10Ah (480Wh): 35–45km range
48V 14Ah (672Wh): 45–55km range

Compatible Motor Power: 250W–500W


DP-5C	DP-5

Applicable E-Bike Models & Scenarios:

Ultra-light folding electric bikes: mainstream portable folding e-bikes for urban commuting
Small-sized city commuter electric bikes, lightweight urban electric assist bikes
Entry-level flat-foot mountain electric bikes with low power configuration

Core Features: The smallest and lightest model in the entire Parrot e-bike battery series, easy to disassemble and carry. It delivers stable power and sufficient range for short-distance daily commuting, making it the most cost-effective lightweight electric bike replacement battery for entry-level users.

3.2 DP-6 (YW6 / Parrot 6#) — Mid-Range All-Rounder Battery

Positioning: Most cost-effective universal model, balanced power, range and volume

Physical Parameters: 368 × 90 × 113mm | Max 70pcs 18650 cells (10S7P/13S5P)

Voltage & Capacity & Real Range:

36V 13Ah/20Ah: 35–65km range
48V 13Ah/17.5Ah/20Ah: 50–80km range
52V 13Ah/20Ah: 55–90km range

Compatible Motor Power: 500W–1000W


DP-6C	DP-6

Applicable E-Bike Models & Scenarios:

Ordinary mountain electric bikes, cross-country electric assist bikes
Medium-sized urban commuter electric bikes, long-distance daily travel e-bikes
Ordinary modified electric bikes, mid-power conversion e-bike projects

Core Features: The best-selling all-rounder in the Polly DP battery lineup, compatible with most mainstream mid-power e-bikes on the market. It balances volume, power, and long range e-bike battery performance, fully covering daily commuting and light off-road riding needs.

3.3 DP-6C — Controller Integrated Mid-Range Battery

Positioning: Space-saving modified special battery, built-in controller compartment

Physical Parameters: 367 × 90 × 111mm | Max 65pcs 18650 cells

Voltage & Capacity & Real Range:

36V up to 21Ah (756Wh): 60–70km range
48V up to 17.5Ah (840Wh): 65–75km range

Compatible Motor Power: 500W–800W

Applicable E-Bike Models & Scenarios:

E-bike frame modification and DIY conversion projects (no reserved controller space)
Compact frame mountain electric bikes and folding modified e-bikes
Urban modified electric bikes that need to simplify wiring and save space

Core Features: Exclusive 9-pin controller slot, compatible with KT 9MOSFET sine wave controllers. As a professional controller integrated e-bike battery, it integrates battery and controller into one unit, simplifies modification wiring, avoids messy external wiring, and is tailor-made for e-bike conversion battery projects.

3.4 DP-9 — High-Capacity Heavy-Duty Long-Range Battery

Positioning: Large-capacity long-range battery for heavy-load and off-road riding

Physical Parameters: 397 × 90 × 125mm | Max 91pcs 18650 cells (13S7P)

Voltage & Capacity & Real Range:

48V 17.5Ah–24.5Ah: 65–105km range
52V 15Ah–20Ah: 65–95km range
Custom 60V 20Ah: 95–110km range

Compatible Motor Power: 1000W+ high-power motors

Applicable E-Bike Models & Scenarios:

Super73 series fat tire electric bikes (fully compatible)
Large-size fat bike electric bikes, snow off-road e-bikes
Cargo electric bikes, heavy-load long-distance touring e-bikes
High-power modified cross-country electric bikes

Core Features: Boasts the largest capacity among all 18650-type Parrot downtube e-bike battery models. It provides ultra-long cruising range and stable continuous output, perfectly matching heavy-load travel and long-distance off-road riding, and is the top high capacity e-bike battery for fat bike users.

3.5 DP-9C — High-Power Integrated Controller Heavy-Duty Battery

Positioning: High-power modification dedicated battery, long range + integrated controller dual advantages

Physical Parameters: 397 × 90 × 141mm | Max 84pcs 18650 cells

Voltage & Capacity & Real Range:

48V 17.5Ah–22Ah: 65–90km range
52V 15Ah–18Ah: 65–85km range

Compatible Motor Power: 1000W–1500W high-power motors

Applicable E-Bike Models & Scenarios:

Super73 modified high-power fat bikes
Professional off-road electric bikes, racing modified e-bikes
High-load outdoor touring electric bikes with limited frame space

Core Features: Retains the high-capacity advantage of the standard DP-9, with an added built-in controller compartment. This high-end controller integrated e-bike battery solves wiring chaos and space occupation pain points perfectly, ideal for high-power e-bike conversion and modified fat bike builds.

3.6 DP-21700 (5C) / DP-21700-7 — Premium High-Rate Power Battery

Positioning: Top-level high-power, high-density premium battery for extreme off-road and high-speed riding

Physical Parameters: 368 × 95 × 125mm | Premium LG/Samsung 21700 cells

Core Performance: 5C high-rate discharge, 30A continuous current, 50A peak current

Voltage & Capacity & Real Range:

36V 25Ah: 70–85km range
48V 20Ah–25Ah: 75–110km range
52V 20Ah–25Ah: 85–125km range

Compatible Motor Power: 1000W–1500W high-speed high-power motors

Applicable E-Bike Models & Scenarios:

High-speed modified Super73 fat bikes
Professional off-road racing electric bikes, hill-climbing extreme e-bikes
Long-distance endurance touring electric bikes pursuing maximum range and power

Core Features: Adopts premium high-density 21700 lithium cells, featuring higher energy density and longer service life than traditional 18650 e-bike batteries. The professional 5C high-rate discharge design provides strong instantaneous power, delivering excellent acceleration and steep hill-climbing performance. It is the ultimate high capacity long range e-bike battery for high-speed and off-road racing e-bikes.

4. Parrot DP Battery Series Full Comparison Table

Model	Dimensions (mm)	Cell Type	Main Voltage	Max Capacity	Max Range	Matching Motor	Core Advantage & Applicable Bike
DP-5	370×90×110	18650	36V/48V	48V 14Ah	55km	250W–500W	Lightweight, portable; folding & city commuter e-bikes
DP-6	368×90×113	18650	36V/48V/52V	52V 20Ah	90km	500W–1000W	Cost-effective all-rounder; mountain & mid-range commuter e-bikes
DP-6C	367×90×111	18650	36V/48V	36V 21Ah	70km	500W–800W	Built-in controller slot; compact frame & DIY conversion e-bikes
DP-9	397×90×125	18650	48V/52V/60V	48V 24.5Ah	105km	1000W+	Super large capacity; Super73 & fat tire heavy-load e-bikes
DP-9C	397×90×141	18650	48V/52V	48V 22Ah	90km	1000W–1500W	High capacity + integrated controller; high-power modified fat bikes
DP-21700	368×95×125	21700	36V/48V/52V	52V 25Ah	125km	1000W–1500W	5C high-rate power; high-speed off-road & racing e-bikes

5. Professional Buying Guide: How to Choose Parrot DP Battery

5.1 Confirm Motor Voltage & Power

36V (250W–500W): Choose DP-5 for daily short commuting
48V (500W–1000W): Choose DP-6/DP-6C for balanced daily use and modification
52V/60V (1000W+): Choose DP-9/DP-9C/DP-21700 for high power and long range

5.2 Select According to Riding Range Demand

Short daily ride (20–50km): DP-5 low-capacity version
Medium commuting & leisure riding (50–80km): DP-6/DP-6C mid-capacity version
Long-distance touring & off-road (80km+): DP-9/DP-9C/DP-21700 high-capacity version

5.3 Choose Standard or C-Series (Controller Integrated)

Original factory complete e-bike (reserved controller space): Standard DP-5/DP-6/DP-9
DIY modification, compact frame, no reserved controller space: Priority DP-6C/DP-9C

5.4 Choose Cell Type: 18650 vs 21700

Daily cost-effective use: 18650 cell series (stable, cost-effective, sufficient performance)
Pursue extreme power & longer life: 21700 5C high-rate cell series

6. Final Conclusion

The complete Parrot (Polly/DP) e-bike battery lineup covers all mainstream e-bike usage scenarios from entry-level daily commuting to professional high-power off-road riding. DP-5, DP-6, and DP-9 are classic standard downtube battery models positioned for different capacity and power tiers, while DP-6C and DP-9C are specialized controller integrated e-bike battery versions that solve common modification and frame space shortage pain points. The top-tier DP-21700 5C high-rate battery meets extreme performance demands for high-speed cruising and intense off-road riding.

When purchasing a reliable long range e-bike battery or electric bike replacement battery, you must select the correct Parrot DP battery model according to your e-bike’s motor voltage, motor power, frame structure, daily riding range, and modification needs. Choosing a genuine Parrot downtube battery equipped with a certified BMS board and A-grade 18650/21700 cells can effectively prevent range attenuation, eliminate potential safety hazards, and maximize the service life and overall riding experience of your electric bike.