Rome Tech Replacement Battery for Bluetooth Speakers, Router Backup Power, Electric Hand Torch, Instrumenr Unit, Loud Speaker etc. - 3.7V 5200mAh Lithium Ion Rechargeable Battery
Condition: New
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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.
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Availability:
In Stock.
Arrives
Thursday, Jan 15
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Features
- Precision Application: This replacement 3.7V battery is designed for the the Bluetooth Speakers, Router Backup Power, Electric Hand Torch, Instrumenr Unit, Loud Speaker, Solar Energy Lamps, Sprayer etc. Ensure compatibility by checking the voltage, cell size, and connector type of the 3.7V lithium ion battery for the best fit.
- High quality: 3.7 Volt Lithium Battery with High Capacity Rechargeable battery
- Enhanced Safety: 3.7 Volt rechargeable battery includes built-in lithium charge and discharge protection chip technology, providing a safe working platform for devices with short circuit protection
- Long-lasting Performance: With a high capacity this 3 7 Volt rechargeable battery ensures extended use of the gadgets.
- For optimal ion speaker battery replacement health, fully charge the battery in your device before first use and recharge it every three months if it remains unused for a long period.
Number of Batteries: 1 Lithium Ion batteries required.
Brand: Rome Tech
Battery Cell Composition: Lithium Ion
Battery Capacity: 5200 Milliamp Hours
Recommended Uses For Product: Power Tool
Package Dimensions: 8.35 x 4.41 x 0.87 inches
Item Weight: 3.52 ounces
Batteries: 1 Lithium Ion batteries required.
Date First Available: June 7, 2024
Manufacturer: Rome Tech
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Jan 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.
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- Affirm Pay in 4
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- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
Perfect replacement
Reviewed in the United States on February 2, 2025 by camp david
Exactly what I needed for my solar flagpole light. Item was just as advertised and easy to install. Only reason I won't give it 5 stars is because I don't know yet how long it will last.
Reviewed in the United States on July 30, 2025 by New gift buyer
This is a basic 2-cell Li-Ion battery pack with a specific connector that fits certain devices. Not much to report. No issue thus far.
Reviewed in the United States on December 11, 2024 by Mr_D
I got this battery because I have emergency lights that use rechargeable batteries. The batteries they come with are not very strong but will keep the light on for about three hours. We have frequent power outages and I wanted a stronger battery so the light would stay on longer during power outages. This one fits the bill. It came charged with 3.87v and having 5200mAh, it should last three times as long as my current batteries. It is funny because shortly after changing out the batteries in the emergency light we had a power outage. This kept the light shining long after we went to bed.
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Reviewed in the United States on November 21, 2024 by OO
I am using this for an off-label use that requires a 3.7v rechargeable battery. I am using this in conjunction with a solar panel and it is keeping my device properly powered. Battery life seems good and it handles frequent (daily) recharge cycles well.
Reviewed in the United States on November 9, 2024 by J
I purchased this to use for a backup battery for my bluetooth speaker. It works good, but I don't think the rated capacity is what they advertise. Minus one star for having slightly less run time than the original battery. I am not disappointed, however, for the price of an original I could buy THREE of these.
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Reviewed in the United States on July 9, 2025 by Callaway6360
I needed a replacement battery for a set of solar light where the original battery had just worn out. I measured the space available and went looking for a battery to replace the OEM battery. The Rome Tech battery provided the highest mAh for the space available in my application. The battery seems to be well made. I cannot speak to the life span of the battery but it is a good fit for my application and is working as expected. I am quite satisfied with the built and power of the battery.
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Reviewed in the United States on September 28, 2024 by Arkansas Reviews
I have a couple of blue tooth speakers that have only one 18650 battery. These battery packs from ROMETECH should do the trick in at least doubling the battery capacity for them. This comes with 2.5" of high quality wiring terminated to a JST-SYP-02T-1 type connector. This should work well for nearly any project where reliable high quality batteries are required. Mine came charged to 3.5VDC. Definitely recommended!
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Reviewed in the United States on August 24, 2024 by SoundMan73 SoundMan73