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DBB6020 Smart Dual Battery Parallel Module 10‑100VDC 20‑50A XT60 Anti‑Reverse EMF Balance Discharger for Ebike Lithium Lead‑Acid Battery Range Extender Spare Part
DBB6020 Smart Dual Battery Parallel Module 10‑100VDC 20‑50A XT60 Anti‑Reverse EMF Balance Discharger for Ebike Lithium Lead‑Acid Battery Range Extender Spare Part - Image 2
DBB6020 Smart Dual Battery Parallel Module 10‑100VDC 20‑50A XT60 Anti‑Reverse EMF Balance Discharger for Ebike Lithium Lead‑Acid Battery Range Extender Spare Part - Image 3
DBB6020 Smart Dual Battery Parallel Module 10‑100VDC 20‑50A XT60 Anti‑Reverse EMF Balance Discharger for Ebike Lithium Lead‑Acid Battery Range Extender Spare Part - Image 4
DBB6020 Smart Dual Battery Parallel Module 10‑100VDC 20‑50A XT60 Anti‑Reverse EMF Balance Discharger for Ebike Lithium Lead‑Acid Battery Range Extender Spare Part - Image 5
DBB6020 Smart Dual Battery Parallel Module 10‑100VDC 20‑50A XT60 Anti‑Reverse EMF Balance Discharger for Ebike Lithium Lead‑Acid Battery Range Extender Spare Part - Image 6
DBB6020 Smart Dual Battery Parallel Module 10‑100VDC 20‑50A XT60 Anti‑Reverse EMF Balance Discharger for Ebike Lithium Lead‑Acid Battery Range Extender Spare Part - Image 7

DBB6020 Smart Dual Battery Parallel Module 10‑100VDC 20‑50A XT60 Anti‑Reverse EMF Balance Discharger for Ebike Lithium Lead‑Acid Battery Range Extender Spare Part

DBB6020 smart dual‑battery balance discharger module 10‑100VDC 20‑50A. MCU real‑time voltage monitoring, auto single‑battery switch, anti‑reverse EMF protection. IP67 aluminum housing with XT60 connector for ebike lithium & lead‑acid battery range extension.

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DBB6020 Smart Dual‑Battery Balance Discharger Module for E‑Bike

This intelligent dual‑battery parallel balance discharger module is specially designed for electric bikes, solves the problem of motor reverse high‑voltage burning controller caused by ordinary direct Y‑cable parallel connection. It supports lithium battery and lead‑acid battery. With CE & RoHS compliance, it is ideal ebike upgrade spare part to extend riding range.

Compatibility

✅ Electric bike lithium battery packs
✅ Electric bicycle lead‑acid battery packs
✅ Wide voltage ebike system 24V‑100V (48V/60V/72V mainstream ebike supported)

Precise Dimensions & Electrical Parameters

ParameterValue
ModelDBB6020（20A, optional 30A/40A/50A）
Working Voltage10‑100 VDC
Rated Output Current20A (Max 50A optional)
Static Current20‑70 uA
Max Power750W
Dimension45*35*19mm
Wire Spec14AWG silicone wire, wire length 50mm
ConnectorXT60 plug
Housing MaterialAluminum alloy
Waterproof GradeIP67
Flame RetardantV0
Operating Temperature-20℃ ~ +75℃
Storage Temperature-40℃ ~ +85℃

Package Includes

1 × DBB6020 Dual‑Battery Balance Discharger Module with pre‑wired XT60 silicone cables

Key Features

✅ MCU Real‑time Voltage Monitoring & Balanced Discharge: MCU monitors two battery packs voltage dynamically. Higher‑voltage battery outputs first when voltage difference exists; two batteries discharge together when voltages are equal, avoid cross‑charging damage between battery packs.
✅ Auto Single‑Battery Detect & Switch: The module can work normally when only one battery pack connected. No manual rewiring required for single‑battery daily ride.
✅ Anti‑Reverse EMF Protection: Absorb back‑electromotive force generated by motor braking, prevent reverse high voltage from damaging ebike controller.
✅ Ultra‑low Static Power Consumption: Static current only 20‑70uA, nearly no power drain in standby status, avoid battery over‑discharge during long‑time storage.
✅ IP67 Waterproof Aluminum Housing: Alloy housing offers good heat dissipation, IP67 waterproof & V0 flame retardant, adapt to complex outdoor rainy riding environment.
✅ Wide Compatibility: Works with lithium‑ion and lead‑acid batteries. Two battery packs need same nominal voltage, different capacity is acceptable. Pre‑assembled 14AWG silicone wire with XT60 plug for quick installation.
✅ Safety Certification: Compliant with CE and RoHS standards, multiple current rating options (20A‑50A) fit different power ebike rebuild projects.

Specifications

Brand: Tongyou
Product Name: Dual‑Battery Balance Discharger Module
Model: DBB6020
Material: Aluminum alloy housing, 14AWG silicone wire
Connector: XT60
Working Voltage:10‑100VDC
Waterproof: IP67
Flame resistance: V0
Operating Temp:‑20℃ ~ +75℃
Compatible Battery: Lithium battery, Lead‑acid battery
Package: 1 × pre‑wired dual‑battery parallel module

Important Notes

⚠️ Never reverse positive and negative power cables, power off before wiring installation.

Please make sure two battery packs have the same nominal voltage, different capacity is allowed.
Do NOT exceed module rated maximum working current to avoid overload failure.
Product photos are for reference only, please refer to physical goods.
Suitable for ebike DIY enthusiasts, repair shops and wholesale distributors. Cost‑effective solution for dual‑battery range upgrade, avoid battery cross‑charging and controller burnout risk.    

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What Our Riders Say

We specialize in mid-drive motors and e-bike parts. Strict testing, powerful R&D and flexible OEM service guarantee long-term cooperation.

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It used to take me weeks to hunt down hard‑to‑find e‑bike spare parts. Their compatibility‑check technical support saved me countless repair headaches. Reliable supplier I can always count on.

Mark Wilson Repair Technician

Flexible mixed‑batch ordering is a game‑changer for my business. Low‑risk trial‑order options, fast delivery and solid OEM‑ODM service help me expand my product range with zero inventory pressure.

Jennifer Carter Wholesale

We have been sourcing e‑bike components from them for over one year. Product quality is consistent, and their responsive after‑sales support makes our daily shop‑running much easier. Highly recommended.

Ryan Thompson ebike shop owner

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For more FAQs and further details, please get in touch with us

faqs

Frequently Asked Questions

We supply genuine OEM parts and premium compatible aftermarket replacement parts for e-bikes, including motor components, controllers, throttles, PAS sensors, wiring harnesses, connectors and Bosch form-factor batteries.

We serve mainstream drive system manufacturers: Ananda, Bafang, Aikema, Tongsheng, Shengyi, Bosch and more. We also provide repair components for complete e-bike brands including Sur‑Ron, Aventon, Trek and many others.

All items are brand-new and inspected before shipment. We do not supply second-hand or refurbished goods.

Our team verifies compatibility according to your bike model, motor info or original part photos. We confirm available OEM parts or recommend workable alternative solutions.

Yes. Flexible order sizes are supported, ranging from single spare parts to bulk purchases.

Sea freight, air freight and rail transport are optional.

Lead time varies by item and shipping mode. We confirm exact timelines before each order and share tracking updates.

We provide part identification, model matching and full order follow-up support.