21v Battery Dual Port Quick Charger Base, Dual Rapid Charger Compatible 21v Lithium-Ion Battery by SHINTYOOL (Battery Not Included)
Condition: New
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$6
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- – 4-month term
- – No impact on credit
- – Instant approval decision
- – Secure and straightforward checkout
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Extended holiday returns
FREE refund/replacement until Jan 31, 2026 Learn more
FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
20 left in stock
Arrives
Jan 11 – Feb 15
Recently Viewed
Color: Black-2 Port
Features
- Great GiftFor Dad, Mom, Husband, Friends And Family.
- Compatible with More Our Charger are compatible with some major brands, please feel free to contact us for more model information.
- 21v Battery ChargerSupport 100-240v universal standard ac input voltage. 2a power adapter,us plug,led indicator to easily see the charging situation.
- Multi Protect Safety SystemThis fast charger is equipped with overload protection,overheat protection over-charge protection,over-current protection,over voltage protection& over-discharge protection.
- Save Your Money and TimeThis allows you to charge 2 batteries at once (saving a lot of space and time vs 2 individual chargers).4000 mAh batteries in 90 minutes, 2000 mAh batteries in only 45 minutes,There are 2 indicators under the charging stand to show the charging status.
- WEVE GOT YOU COVERED Any Non-human Damage Or Any Reason You Are Not Completely Satisfied With Our Product, We Will Immediately Provide You A Full Refund ( Or Replace Your Item).
Brand: SHINTYOOL
Color: Black-2 Port
Item Weight: 12 Ounces
Output Voltage: 21 Volts
Input Voltage: 100 Volts
Package Dimensions: 8.39 x 5.94 x 4.45 inches
Item Weight: 12 ounces
Item model number: CB4002
Date First Available: June 4, 2023
Manufacturer: SHINTYOOL
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Jan 11 – Feb 15
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
Color: Black-2 Port
I actually bought the combo pack that came with a 21v battery also. It is very easy to use and should work with any 21-volt battery that has the 3-prong pattern. The batteries slide in and click into place using the batteries tab. The battery it came with seems to be of decent quality. It fit the existing batteries I already had. Different tools drain batteries differently so I would say that it uses the battery about average for the tool that it is. I would say this is a little on the expensive side for a battery and charger since I just bought a 24v 2AH Kobalt battery and charger for 41.50. But I needed the 21V battery and charger and this seemed to be the best value for that.
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Reviewed in the United States on September 6, 2025 by waldo
Color: Black-2 Port
I bought this to replace a small generic battery charger. This charger works for the Robustrue 3/8" Cordless Ratchet Wrench. I had to look and look for a regular base charger and found this one. It works great the quality is great.
Reviewed in the United States on November 15, 2025 by Warren A.
Color: Black-2 Port
A really good charger. Really fast charging
Reviewed in the United States on September 15, 2025 by Ekaterina Morozova
Color: Black-2 Port
Works well with some off name batteries
Reviewed in the United States on April 8, 2025 by robert penman
Color: Black-2 Port
Dual battery charger for our little chain saws. It's compatable with makita 21 and 18 volt batteries. Very simple dedign. Red light when charging and green light when fully charged. Works well and has the usual protection circuits built in so it won't overcharge the batteries.
Reviewed in the United States on March 16, 2025 by Dave K
Color: Black-2 Port
I love this charger easy to use and dual charger
Reviewed in the United States on July 10, 2025 by Jubi
Color: Black-2 Port
Exactly what I ordered.
Reviewed in the United States on October 3, 2025 by Howard F. Duarte
Color: Black-2 Port
Good price
Reviewed in the United States on November 19, 2025 by lee