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Item #:
225532948
Tenergy 9V NiMH Battery, High Capacity 250mAh Rechargeable 9 Volt Batteries for Smoke Detector/Alarms, TENS Unit, Metal Detector, and More, 10 Pack
Item #:
225532948
MWK 88909
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Replace your alkaline batteries with these NiMH 9V rechargeable batteries. They will pay for themselves after 10 cycles. Switch over. Save. Reuse. Recharge with Tenergy.
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
Product Details
| Item Weight | 1.1 lbs (500 grams) |
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To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Product Description
Tenergy 9V NiMH Battery, High Capacity 250mAh Rechargeable 9 Volt Batteries for Smoke Detector/Alarms, TENS Unit, Metal Detector, and More, 10 Pack
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Customer Questions & Answers
-
Question:
What devices can I use the Tenergy 9V NiMH Batteries with?
Answer: The Tenergy 9V NiMH Batteries are versatile and can be used with various devices, including smoke detectors, TENS units, metal detectors, and any other devices that require a 9V power source. These rechargeable batteries provide a reliable and consistent power supply, making them perfect for critical safety devices like smoke alarms. Users often find them advantageous for high-drain devices as well, as they maintain their performance over time, ensuring both effectiveness and peace of mind. -
Question:
How long do Tenergy 9V NiMH Batteries last on a single charge?
Answer: The longevity of Tenergy 9V NiMH Batteries can vary depending on the specific device and usage patterns. On average, these batteries provide approximately 250mAh of capacity, which supports prolonged operation in devices like smoke detectors. For instance, a smoke detector that draws minimal power may last several months on one charge, while more power-hungry devices will deplete them faster. Regular monitoring and maintenance of your devices can also help optimize battery life. -
Question:
Are Tenergy 9V NiMH Batteries safe for use in smoke detectors?
Answer: Yes, Tenergy 9V NiMH Batteries are designed to be safe for use in smoke detectors. They have undergone rigorous testing to ensure quality and reliability, which is crucial for devices that play a critical role in safety. By utilizing rechargeable batteries, users can help ensure that their smoke detectors maintain a constant power supply without the hassle of frequent replacements, thus enhancing their overall safety preparedness. -
Question:
Can I mix Tenergy 9V NiMH Batteries with other battery types?
Answer: It is not advisable to mix Tenergy 9V NiMH Batteries with other battery types, such as alkaline or lithium batteries. Different battery chemistries can have varying discharge rates and voltages, which may lead to uneven performance or potential malfunctions in your devices. For optimal results, always use the same type and brand of batteries in a single device to ensure safety and functionality. -
Question:
How do I charge the Tenergy 9V NiMH Batteries?
Answer: Charging Tenergy 9V NiMH Batteries requires a compatible NiMH charger meant for 9V batteries. Simply insert the battery into the charger and follow the manufacturer's instructions for charging time. It’s essential to avoid overcharging, as this can impact the battery's lifespan. Regularly charging these batteries helps maintain consistent performance, especially for critical devices like smoke alarms, ensuring they remain operational when needed. -
Question:
What is the capacity of the Tenergy 9V NiMH Battery?
Answer: The Tenergy 9V NiMH Battery offers a high capacity of 250mAh, making it suitable for various applications. This capacity means that the battery can store enough energy to power devices effectively without frequent recharges. It is particularly beneficial in devices that require a stable power supply, such as smoke detectors and medical equipment like TENS units, ensuring optimal performance when you need it most. -
Question:
Are Tenergy 9V NiMH Batteries environmentally friendly?
Answer: Yes, Tenergy 9V NiMH Batteries are considered more environmentally friendly compared to disposable alkaline batteries. Because they are rechargeable, they reduce the overall waste generated by single-use batteries. Furthermore, their prolonged lifespan means fewer batteries need to be manufactured and disposed of, making them a more sustainable option for consumers looking to lessen their environmental impact while powering their devices. -
Question:
Can I use Tenergy 9V NiMH Batteries in outdoor devices?
Answer: Absolutely! Tenergy 9V NiMH Batteries can be used in outdoor devices such as certain types of metal detectors and outdoor smoke detectors. Their ability to recharge means less hassle when it comes to maintenance. However, ensure that the device is compatible and designed to withstand outdoor conditions, as exposure to extreme temperatures or moisture may affect the battery performance. -
Question:
Where can I buy Tenergy 9V NiMH Battery, High Capacity 250mAh Rechargeable 9 Volt Batteries for Smoke Detector Alarms, TENS Unit, Metal Detector, and More 10 Pack?
Answer: You can purchase Tenergy 9V NiMH Batteries, High Capacity 250mAh Rechargeable 9 Volt Batteries in a convenient 10-pack on Ubuy. Ubuy offers a reliable shopping experience, ensuring you can find the batteries you need for your smoke detectors and other devices with ease. Just visit Ubuy's website to explore the available options and get your pack today.
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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“Accurate delivery timing given”
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“Not madly expensive like I thought, and much quicker than promised.”
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12 June 2026 · via Trustpilot
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- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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MWK 88909
This product is not Fulfilled by Ubuy and can take minimum 10 days in delivery. We might cancel the product from the order and refund you if any issue arise with the delivery of this product.
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
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Fastest cross-border delivery
Features & Benefits
- Exact replacement for standard 9V sized batteries
- Can be recharged up to 1000 times
- Perfect for high/low draining electronic items
- Keeps devices running longer with no memory effect
- Money-saving and eco-friendly option
- Should be stored in a dry and cool place
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