52V E-Bike Battery – Samsung 50G Rear Rack Pack (20Ah)

Samsung INR 21700-50G cells (5000mah)

This 52V Samsung 50G Rear Rack pack is the “Utility Player” of your lineup. In the business, we see this as the go-to solution for step-through frames, beach cruisers, and small-triangle mountain bikes where a “Shark” or “Triangle” pack simply won’t fit.

Model: Chenyang 52V Rear Rack

Configuration: 14s4p
Battery Voltage: 52V
Battery Amp: 20Ah (1040Wh)
Max Continuous Current: 40A
Weight: 8 kg (17.6 lbs)
Dimensions (L x W x H): 430 x 160 x 85mm
Dimensions (L x W x H): 17 x 6.3 x 3.4″

Includes:

• Includes rear rack mount, adjustable plate, various hardware accessories for install
• 3A lithium battery charger
• Detachable battery mount with two security keys for quick connecting as well as power functions
• Encased in a poly-carbonate battery case with cell module, BMS, & line out with XT90 connectors shrink wrapped
• BestMatch BMS provides protection against short-circuit, over-charge, over-discharge, over-current

Key Features:

• The Samsung 50G are arguably the most reliable cells in the e-bike industry, generally called the gold standard. With a 20Ah (1040Wh) capacity, this pack provides the massive range needed for heavy utility use. These cells are designed to maintain a healthy capacity even after 1,000+ charge cycles, ensuring your commuter bike stays on the road for years.

• You don’t just get a battery; you get a high-quality rear rack that acts as a cargo mount and rack if you desire. This dual system includes an adjustable mounting plate and hardware that integrates directly into your bike’s existing frame eyelets. It’s designed to support panniers and cargo while keeping your battery locked securely behind a dual-key security system.

Optional connector swap or adapter is available upon request.

If a vendor cannot tell you how their batteries are configured, which cells were used for the pack, or what BMS is soldered, please be very cautious supporting these businesses as not all batteries packs are created equal and can be dangerous, especially in an e-bike use case.

What I personally love about this rack system is how it solves two problems at once. Giving you a rock-solid battery mount and a functional cargo rack. When testing this setup on the local trails in Northern Virginia, I found the weight distribution over the rear wheel a bit heavy which could provide a hidden perk when you’re accelerating from a stoplight with a full load. Just make sure that this bike is staying on the road; we do not recommend any rear rack battery for mountain trails, that’s how you fall off and resent your life’s choices. We chose the Samsung 50G cells in many other products that we sell because they are famous for their longevity. This pack isn’t just a part for your bike; it’s a reliable long-term investment for your daily commute. If you’ve been struggling to find a way to electrify your cruiser or step-through frame, this rear-rack powerhouse is the missing link.