








54.6V

48V Lithium Battery

OVP / OCP / SCP / OTP
Ridstar Q20 Charger – 54.6V 2A/3A Replacement Charger
Fits Ridstar Q20 Series · Q20 · Q20 Pro · H20 Pro · H20 Pro
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Description
⚡ Ridstar Q20 Replacement Charger – 54.6V 2A/3A
A reliable replacement charger for Ridstar Q20 Series e-bikes with 48V lithium-ion batteries. Choose between 2A standard charging and 3A fast charging based on your charging needs.
🔌 Compatible with Ridstar Q20 Series
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Specially designed for Ridstar Q20 / Q20 PRO / H20 PRO / H26 PRO
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Features a 3-Pin connector for stable and reliable charging
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Designed for compatible Ridstar 48V lithium-ion battery systems requiring a 54.6V charger
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Please compare your original charger output and connector before ordering
⚡ Choose Your Charging Current
2A – Standard Charging
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Ideal for regular daily or overnight charging
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Suitable for users who prefer standard charging speed
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A practical replacement for most original 2A chargers
3A – Fast Charging
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Charges faster than the 2A version
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Ideal for riders who want shorter charging times
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Please confirm that your battery supports 3A charging current before ordering
🔧 Premium Build Quality
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Gold-plated, anti-corrosion output plugs for reliable conductivity
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Input cable with reinforced insulation and bend-resistant design
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Durable construction designed for long-term everyday use
🛡️ Comprehensive Safety Protections
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Over-voltage protection (OVP)
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Over-current protection (OCP)
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Short-circuit protection (SCP)
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Over-temperature protection
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Reverse-polarity protection
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One-year warranty included
🎒 Compact & Durable Design
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Fully enclosed, dust- and moisture-resistant housing
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Silent operation during charging
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Lightweight and portable for daily commuting, travel, and outdoor use
📋 Technical Specifications
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Input: 100–240V AC / 50–60Hz
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Output Voltage: 54.6V DC
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Charging Current: 2A / 3A selectable
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Battery Type: 48V Lithium-ion
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Connector: 3-Pin
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Application: Compatible Ridstar Q20 Series e-bikes
⚠️ Notice: Not suitable for lead-acid batteries.
❓ Frequently Asked Questions
Q: Which Ridstar models is this charger compatible with?
A: This charger is designed for compatible Ridstar Q20, Q20 PRO, H20 PRO, and H26 PRO models using a 48V lithium-ion battery and matching 3-Pin charging connector. Please verify your original charger specifications before ordering.
Q: What is the difference between the 2A and 3A versions?
A: The 2A version provides standard charging, while the 3A version charges faster. If you choose the 3A version, please confirm that your battery supports a 3A charging current.
Q: What connector type does this charger use?
A: It uses a 3-Pin connector. Please compare the connector shown in the product images with your original charger before purchasing.
Q: How long does it take to fully charge my Ridstar Q20?
A: Charging time depends on battery capacity and remaining charge. For a typical 48V 14Ah battery, the 2A version may take approximately 7–8 hours, while the 3A version may take approximately 5–6 hours from a low state of charge. Actual charging time may vary.
Q: Can I use this charger in other countries?
A: Yes. It supports 100–240V AC universal input, so it can be used in regions with compatible wall outlets without a voltage converter.
Q: Is this compatible with lead-acid batteries?
A: No. This charger is designed for 48V lithium-ion battery systems and must not be used with lead-acid battery packs.
Q: What should I check before ordering?
A: Please confirm that your battery is 48V lithium-ion, your original charger output is 54.6V, and your charging port matches the 3-Pin connector shown in the product images.
Fast & Free Shipping
Fast & Free Shipping
Enjoy free shipping on all U.S. orders.
Orders are typically processed within 1–2 business days. Delivery times may vary depending on your location and the shipping carrier.
Once your order ships, you'll receive a tracking number by email so you can easily track your delivery.
Questions about your order or delivery? Contact us at support@bicmdoparts.com.
30-Day Money-Back Guarantee
Not satisfied with your purchase? You may return your order within 30 days of delivery for a refund, subject to our return policy.
For return assistance, contact us at support@bicmdoparts.com with your order number.
Protected by 2-Year Warranty
Your BICMDO charger is backed by a 2-year limited warranty against defects in materials and workmanship under normal use.
For warranty assistance, contact us at support@bicmdoparts.com with your order number.
Lifetime Customer Support
We're Here for You—Always.
Got questions or concerns? Reach out anytime at support@bicmdoparts.com or call us at +1 281 6619416

54.6V

48V Lithium Battery

OVP / OCP / SCP / OTP

Ridstar Q20 Charger – 54.6V 2A/3A Replacement Charger
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Why Charger Quality Should Never Be Overlooked
A low-quality charger can create more problems than it solves. Inconsistent charging, overheating, poor protection, and weak internal components can affect both safety and battery life.
Designed for Riders Who Need Support
Quality assurance
At bicmdo, we understand that customers often have questions about compatibility, connector type, output, and usage. That is why we do more than sell chargers.
After-sales service
At bicmdo, we understand that customers often have questions about compatibility, connector type, output, and usage. That is why we do more than sell chargers.
Technical support
At bicmdo, we understand that customers often have questions about compatibility, connector type, output, and usage. That is why we do more than sell chargers.





