Can I leave this connected to my motorcycle all winter without damaging the battery?

Yes! Battery Tender Junior switches to float/maintenance mode at full charge, offsetting self-discharge to keep at 100% without overcharging or damage. Unlike trickle chargers, it adjusts output to battery needs for safe long-term storage.

What size batteries can this charge? Is it good for small motorcycle batteries?

Battery Tender Junior 750mA is ideal for 3–30Ah batteries in motorcycles, ATVs, UTVs, scooters, PWCs, and snowmobiles. Safely charges small 3–5Ah batteries overnight and larger 14–20Ah motorcycle batteries in ~14–22 hrs.

Will the Battery Tender Junior work on my Harley-Davidson?

Yes, Battery Tender Junior works with all Harley-Davidson 12V models, including Sportster, Softail, Dyna, Touring, CVO, and Pan America. The 750mA output is ideal for Harley batteries, and the included harness allows easy plug-in charging.

What is the difference between this and a trickle charger?

A trickle charger delivers constant current and can overcharge a battery during storage. The Battery Tender Junior is a smart charger that automatically switches to float mode, charging only when needed for safe long-term maintenance.

Will this charge a completely dead battery?

Battery Tender Junior can recover most deeply discharged batteries using low-voltage recovery during startup. Batteries below 2V or left discharged too long may be permanently damaged. Red LED = charging; flashing red may indicate a bad battery.

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Battery Tender 021-0123 12-Volt Battery Tender(R) Junior

Battery Tender 021-0123 12-Volt Battery Tender(R) Junior

Product ID: 144341349

Details

Amperage
0.75 Amps
Brand
Battery Tender
Colour
Black
Input Voltage
12 Volts
Output Voltage
12 Volts

⚡0.75 Amps steady charge

🔋12V optimized output

🇺🇸Proudly made in USA

€ 215.17

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

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Description

🔌 Keep your ride powered and ready—because your battery deserves the best!

HIGHLY RATED BY THOUSANDS - Join over 48,000 satisfied users who trust this charger for their vehicle maintenance.
RELIABLE 0 75 AMP CHARGING - Delivers a consistent, safe charge to keep your battery healthy and ready.
PERFECT 12 VOLT COMPATIBILITY - Engineered specifically for 12V batteries, ensuring optimal performance every time.
COMPACT USER FRIENDLY DESIGN - Sleek black finish with a single-port setup for hassle-free, space-saving use.
TRUSTED AMERICAN CRAFTSMANSHIP - Manufactured in the USA, combining quality and durability you can count on.

The Battery Tender 021-0123 Junior is a compact, 12-volt battery charger delivering a steady 0.75 amps charge. Made in the USA and highly rated by over 48,000 users, it offers reliable, safe, and efficient battery maintenance for vehicles, ensuring your battery stays in peak condition with minimal effort.

Specifications

ASIN	B000CITK8S
Amperage	0.75 Amps
Brand Name	Battery Tender
Colour	Black
Country of Origin	USA
Customer Reviews	4.8 4.8 out of 5 stars (48,118)
External Testing Certification	Não Aplicável
Global Trade Identification Number	00734357000078
Input Voltage	12 Volts
Manufacturer	BATTERY TENDER
Manufacturer Part Number	021-0123
Model Number	021-0123
Number of Ports	1
Output Voltage	12 Volts

Common Questions

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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€ 215.17

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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