The ShunTongDa Hailong 48V 14Ah is a Hailong style replacement battery designed for Rad Power ebikes. It is said to be compatible with the RadRunner Plus, RadRover 4 (and older), RadCity 4 (and older), RadExpand 5 Plus, RadWagon, and RadWagon 4/5. The battery has 672Wh of capacity, a 30A BMS, and an XT60 discharge connector making it positioned as an aftermarket alternative to official Rad Power batteries. Based on 3 reviews for an average rating of 3.4 stars, customer feedback is limited but does provide several real-world data points on performance. To see how it compares to other Rad Power compatible batteries based on cost per watt-hour please visit our comparison table.
As one of the largest manufacturers of ebikes in North America, Rad Power ebikes have become one of the most widely used ebikes on the market today. When original Rad Power batteries lose capacity after 2 to 3 years, riders are left searching for new replacement options. Official Rad Power batteries can be quite expensive and difficult to purchase, which is why customers seek alternative third-party solutions such as this ShunTongDa Hailong 48V 14Ah battery. The Hailong style form factor is different from the integrated style of batteries that come stock on Rad Power ebikes. Therefore, while this battery is electrically compatible with Rad Power ebikes (48V and XT60 connector), the physical mounting method will differ from what you would experience with your stock battery.
Specs and Build Quality
The primary specifications are 48V nominal voltage, 14Ah capacity, and 672Wh of total stored energy (48 x 14 = 672). The battery is composed of brand-new 18650 lithium-ion cells, which are the common cell configuration found in ebike packs. Additionally, the battery is relatively lightweight at 7.7 pounds for its capacity, which is one advantage of the Hailong style.
Physical specs
The dimensions of the battery are 14.96 x 3.5 x 3.74 inches. The Hailong style battery mounts to the downtube of the ebike via a metal bracket attached to the frame. The battery slides into the bracket from the top and is secured in place using the provided key. The ShunTongDa Hailong 48V 14Ah battery comes with a mounting base, two keys, and a charger. The charger charges the battery at 54.6V 2A, which is the correct voltage and current to charge a 48V lithium-ion battery and should take approximately 5 to 7 hours to fill the battery from empty to full.
In addition to the standard features (power switch, safety lock, and LED indicator) found on all Hailong style batteries, the ShunTongDa Hailong 48V 14Ah battery has the added feature of allowing you to safely disconnect the output of the battery when not riding by turning off the power switch. The LED indicator lets you check remaining charge or charging status at a glance, which is especially useful if your Rad bike's display does not accurately reflect a third-party battery's charge level.
BMS and motor range
The BMS on the battery is a 30A unit. This means that the battery can deliver 1440W of continuous power at 48V and 30A, which is more than sufficient to power the motors of the RadRunner, RadRover, and RadWagon. All of these Rad Power models have motors rated at 750W, and since the BMS can deliver up to 1440W of continuous power, there is plenty of room to accelerate quickly and climb steep hills.
Like all modern ebike batteries, the BMS on the ShunTongDa Hailong 48V 14Ah battery includes standard protections for overcharge, over-discharge, short circuit, and high temperatures. According to ShunTongDa, the estimated number of charge and discharge cycles is over 1000, and every single battery is inspected visually and tested for function prior to shipping. A thousand charge cycles translates to roughly 3 to 4 years of daily use before capacity starts meaningfully declining.
Form Factor and Compatibility
The ShunTongDa Hailong 48V 14Ah is compatible with Rad Power ebikes that have a 48V system and use an XT60 connector. The listing specifically states that the following Rad Power ebikes are compatible: RadRunner Plus, RadRover 4 (and older), RadCity 4 (and older), RadExpand 5 Plus, RadWagon, and RadWagon 4/5. However, compatibility is likely referring to the electrical specifications (voltage, connector type) of the Rad Power ebike, not the physical form factor of the battery.
If you plan on purchasing this battery as a replacement for your original Rad Power battery, you will likely need to install a Hailong style battery mount on your downtube in order to physically attach the battery. Alternatively, if you prefer to keep your original battery mount intact, you can choose to mount the Hailong style battery bracket to your downtube and run two separate battery systems. Note that Rad Power ebikes do not typically use the XT60 connector natively, so you may need to obtain an adapter cable in order to connect the XT60 connector to your ebike. If you are looking at this as a second battery for extended range rather than a direct replacement, the Hailong form factor actually works well since it adds capacity without removing your original battery setup.
Real-World Range Estimates
With 672Wh of capacity and a 750W motor, you can expect 20 to 35 miles of range per charge using moderate pedal assist. If you choose to use throttle-only mode or do a lot of heavy hill climbing, you can expect the range to be reduced to 12 to 22 miles per charge. If you choose to use this battery as a second battery in conjunction with your original Rad Power battery, you can potentially double your range for longer rides or multi-day trips.
Daily commute riders that travel 10 to 15 miles round trip on a RadRunner or RadCity can easily complete their workweek on a single charge. Overnight charging is the easiest way to charge the battery, taking approximately 5 to 7 hours to fully charge with the included 2A charger. For riders using this as a range extender, having both batteries charged before a ride gives you a serious amount of range to work with. See how the ShunTongDa Hailong 48V 14Ah compares on price per watt-hour against other Rad Power compatible options on our comparison table.
What Amazon Reviewers Are Saying
With just 3 reviews and a 3.4 star average, the ShunTongDa Hailong 48V 14Ah has limited but telling feedback. One 5-star customer described it as a great battery with great service and fast delivery. Another 4-star customer stated simply that it replaces the original and works well. Those are encouraging data points even if they are brief.
The 1-star review raises a valid concern regarding the lack of a weather seal (cap) on the XT60 connector. The customer mentioned that exposing electrical connections to the elements is a safety hazard, particularly for ebike riders living in rainy climates. You can easily purchase an inexpensive silicone XT60 cap to protect the electrical connections from water damage, but the fact that ShunTongDa does not include one is a reasonable complaint.
Based on the limited customer feedback available at this time, it is difficult to make definitive judgments regarding the long-term reliability of this product. However, ShunTongDa has a large body of reviews for their other ebike battery products and is a well-established manufacturer in the aftermarket Lectric XP and Rad Power battery markets.
Who Should Buy This
The ShunTongDa Hailong 48V 14Ah is best suited for Rad Power ebike owners looking for a Hailong style external battery solution. Whether you wish to replace your original Rad Power battery due to degradation or if you desire additional range for longer commutes or extended rides, this battery meets your needs. At 7.7 pounds, the ShunTongDa Hailong 48V 14Ah is one of the lightest options available in this capacity range.
Please note that while the ShunTongDa Hailong 48V 14Ah is electrically compatible with Rad Power ebikes, it will not be a form factor match for the integrated Rad Power batteries. You will need to add a Hailong style bracket to your downtube to accommodate the new battery, which changes the aesthetics of your Rad Power ebike. Also, the XT60 connector may not be compatible with all Rad Power ebikes, so you may require an adapter cable. If those trade-offs work for you and the electrical specs match, this is a capable battery at a competitive price. Check our blog for more Rad Power battery options and browse the comparison table to find the best price per watt-hour.
Frequently Asked Questions
Is this a direct physical replacement for the original Rad Power battery? No. This is a Hailong-style battery that mounts externally on the downtube using an included bracket. It is electrically compatible (48V, XT60 connector) with Rad Power bikes, but the physical form factor is different from the integrated stock batteries.
What Rad Power models does this battery fit? The listing names RadRunner Plus, RadRover 4 (and older), RadCity 4 (and older), RadExpand 5 Plus, RadWagon, and RadWagon 4/5. Confirm your connector type (XT60) and frame clearance before ordering.
Does the battery come with a charger? Yes, the package includes a 54.6V 2A charger, mounting bracket and base, two keys, and the battery. Full charge time is approximately 5 to 7 hours from empty.
Why is the XT60 connector a concern? One reviewer noted that the XT60 connector does not come with a weatherproof cap, which means the electrical connection is exposed to rain and moisture. You can buy inexpensive silicone XT60 caps separately to solve this issue.
Can you use this as a second battery alongside the original? Yes, that is actually one of the best use cases. The Hailong form factor mounts on the downtube independently of your original battery, so you can run both for extended range on longer rides.
How heavy is the ShunTongDa Hailong 48V 14Ah? The battery weighs 7.7 pounds, which is notably lightweight for a 48V 14Ah pack. The Hailong housing keeps weight down compared to bulkier integrated or metal-housed alternatives.