1Pc 18650 3.7v 4400mAh Li ion Rechargeable Battery Pack with JST-XH 2p 2.54 Connector 16.28Wh/4.4A(Blue,6.75x3.68x1.85cm for Bluetooth Speaker
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Availability:
Only 4 left in stock, order soon!
Arrives
Jul 25 – Jul 30
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Features
- Model Type: 18650 3.7 4400mAh battery With JST XH-2P/2.54 forward plug. plug size will show in our listing picture.
- SIZESize: 2.66*1.46*0.73 Inchs XH plug size0.223x0.155Inchs, please don't cut the wire if the battery plug not correct, so we can full refund for u if return.
- KNOW BEFORE USE 1.please contrast with the old battery and check the polarity of the battery. Red wire connection power positive " +" , Black wire connect power negative pole "-". if is a reversed, you need position of interchange wires. otherwise device will demage.
- POSITION OF INTERCHANGE WIRES --- If the polarity of the red and black wires are reversed, you need to exchange the position of the plug wires, You will need to take the wires out of the plastic plug and reverse them only. To do this, take the small blade you own, very gently pry up the two plastic tabs on the top of the plug one at a time, and gently pull the wire out of the plastic plug.( Don't yank!)
Description
【Note】These battery connector is JST-XH-2P plug, and it is forward plug. please check the connector you need, please don't cut the wire if you want a returnning.
Number of Batteries: 1 Lithium Ion batteries required.
Brand: Generic
Battery Cell Composition: Lithium-Cobalt
Battery Capacity: 4400 Milliamp Hours
Recommended Uses For Product: Airsoft Gun, Drone, Mobility Scooter, Photographic Lighting, Power Tool, Solar Devices, Vacuum Cleaner, ortizan portable bluetooth speaker ipx7 See more
Number of Batteries: 1 Lithium Ion batteries required.
Brand: Generic
Model Number: 3.7v 4400mAh battery XH-2p 2.54 plug
Model Name: 3.7v 4400mAh with XH plug
Manufacturer: Hao Chao Business Co,.Ltd.
Built-In Media: 1pc battery with XH-2p plug
Warranty Description: 2 years
Battery Cell Type: Lithium-Cobalt
Battery Capacity: 4400 Milliamp Hours
Voltage: 3.7 Volts
Reusability: Rechargeable
Amperage: 4400 Milliamps
Compatible Phone Models: ortizan portable bluetooth speaker ipx7 battery
Unit Count: 1.0 Count
Battery Weight: 100 Grams
Item Dimensions: 2.66 x 1.46 x 0.73 inches
Antenna Location: Airsoft Gun, Drone, Mobility Scooter, Photographic Lighting, Power Tool, Solar Devices, Vacuum Cleaner, ortizan portable bluetooth speaker ipx7
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Jul 25 – Jul 30
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.
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Top Amazon Reviews
This generic 18650 battery pack is a convenient and well-built power solution for devices like Bluetooth speakers, DIY lighting, or portable sensors. It stands out by providing a pre-installed connector and a very respectable capacity relative to its marketing claims. Performance & Capacity Analysis I put this battery through a controlled discharge test to verify if the "4400mAh" label was accurate. The Result: I measured a real-world capacity of 3918.7 mAh. Accuracy: This hits about 89% of the stated capacity. While it is slightly under the label, it is significantly more honest than most generic batteries in this class, which often overstate their capacity by 30% or more. Discharge Characteristics: The discharge curve followed a healthy Lithium-ion pattern. While the "plateau" (the time it spends at the nominal 3.7V) could have been a bit flatter, it provided stable power throughout the cycle without any sudden voltage drops until it reached near-depletion. Build and Connectivity Connector Quality: It comes with a JST-XH 2.54mm 2-pin connector pre-attached. This is my preferred connector for these types of packs because it’s robust and provides a very secure fit. It saved me the time of having to solder or crimp my own leads. Wiring Caution: A very important note for any buyer—always check the polarity (Red/Black orientation) of your device's port against the plug. As the listing notes, JST polarities are not standardized across all manufacturers. If yours is reversed, you can easily swap the pins in the plastic housing by gently prying the tabs with a small blade, but you must verify this before plugging it in to avoid damaging your electronics. +1 Physical Size: It is a dual-cell 18650 pack (likely a 1S2P configuration), and the dimensions are accurate to the listing, making it easy to fit into standard speaker battery compartments. Pros Good Energy Density: Delivering nearly 4000mAh in a small package is excellent for long runtimes. Pre-Installed JST-XH: Reliable connector that is ready to use for most compatible devices. Durable Construction: The blue heat-shrink wrap is thick and protects the cells well. Honest Specs: One of the more accurately labeled generic batteries I've tested. Cons Voltage Slump: The discharge curve isn't perfectly flat, meaning the voltage starts to taper slightly earlier than premium-brand cells, but it’s still well within acceptable limits for its price. Final Verdict: 4/5 Stars This is a solid, reliable battery pack at a fair price. While it doesn't quite hit the full 4400mAh, reaching 89% of that goal makes it a far better choice than the many "fake" high-capacity batteries on the market. It’s a great way to revive a dead Bluetooth speaker or power a mobile project.
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Reviewed in the United States on April 4, 2026 by tai tran
It was the perfect battery and fit. Works well
Reviewed in the United States on May 3, 2026 by Glenn A Solitaria
The plug connector plug on backwards
Reviewed in the United States on March 10, 2026 by Nate
This generic 18650 battery pack is a convenient and well-built power solution for devices like Bluetooth speakers, DIY lighting, or portable sensors. It stands out by providing a pre-installed connector and a very respectable capacity relative to its marketing claims. Performance & Capacity Analysis I put this battery through a controlled discharge test to verify if the "4400mAh" label was accurate. The Result: I measured a real-world capacity of 3918.7 mAh. Accuracy: This hits about 89% of the stated capacity. While it is slightly under the label, it is significantly more honest than most generic batteries in this class, which often overstate their capacity by 30% or more. Discharge Characteristics: The discharge curve followed a healthy Lithium-ion pattern. While the "plateau" (the time it spends at the nominal 3.7V) could have been a bit flatter, it provided stable power throughout the cycle without any sudden voltage drops until it reached near-depletion. Build and Connectivity Connector Quality: It comes with a JST-XH 2.54mm 2-pin connector pre-attached. This is my preferred connector for these types of packs because it’s robust and provides a very secure fit. It saved me the time of having to solder or crimp my own leads. Wiring Caution: A very important note for any buyer—always check the polarity (Red/Black orientation) of your device's port against the plug. As the listing notes, JST polarities are not standardized across all manufacturers. If yours is reversed, you can easily swap the pins in the plastic housing by gently prying the tabs with a small blade, but you must verify this before plugging it in to avoid damaging your electronics. +1 Physical Size: It is a dual-cell 18650 pack (likely a 1S2P configuration), and the dimensions are accurate to the listing, making it easy to fit into standard speaker battery compartments. Pros Good Energy Density: Delivering nearly 4000mAh in a small package is excellent for long runtimes. Pre-Installed JST-XH: Reliable connector that is ready to use for most compatible devices. Durable Construction: The blue heat-shrink wrap is thick and protects the cells well. Honest Specs: One of the more accurately labeled generic batteries I've tested. Cons Voltage Slump: The discharge curve isn't perfectly flat, meaning the voltage starts to taper slightly earlier than premium-brand cells, but it’s still well within acceptable limits for its price. Final Verdict: 4/5 Stars This is a solid, reliable battery pack at a fair price. While it doesn't quite hit the full 4400mAh, reaching 89% of that goal makes it a far better choice than the many "fake" high-capacity batteries on the market. It’s a great way to revive a dead Bluetooth speaker or power a mobile project.
...
show more
Reviewed in the United States on February 25, 2026 by bd reviews