1-8S LiPo Battery Tester, Low Voltage Alarm
Price range: £4.50 through £5.50 Inc. VAT
An essential device for checking battery cell voltages and alerting you to low voltage thanks its loud buzzer.
Cell Checker, Low Voltage Buzzer Alarm, for use with 1 up to 8 cells – LiPo / Li-ion / LiMn / Li-Fe batteries with JST-XH connections.
This essential device, features a very loud alarm and a red LED to notify you once your cells reach a user defined voltage – pre-set value 3.3V. As the buzzer can be heard from a distance, you can put this device on your multi rotor and use it as on-board alarm. You can customize the alarm to sound at a voltage between 2.7v~3.8v per cell in 0.10v increments by pressing the setting mode button. This unit also features a handy built in LED display that will show the voltage of each cell followed by the over all voltage of the pack. Don’t risk your multirotor by flying on depleted batteries, this essential device puts an end to guessing how much flight time you have left in your LiPos!
We sell two versions of the LiPo alarm, cased and un-cased.
- Lipo/Li-Fe/Li-ion/LiMn cell count: 1-8S
- Voltage detection precision: ±0.01V
- Unit voltage display range: 0.5-4.5V
- Total voltage display range: 0.5-36V
- 1S test mode voltage range: 4-15V
- Low voltage alarm mode (for 2-8S)
- Alarm set value range: 2.7-3.8V
- Weight: 9g
- Size: 40mm x 25mm x 11mm
Questions and answers of the customers
-
Does this draw much current please
-
A
Hi Mike, we don't have data current draw, but I'm pretty sure it will be negligible.
A LiPo alarm / tester is a must have piece of equipment for any flight box. LiPo batteries require careful management to maximise their life; they can be charged up to 4.20V and discharged down to 3.0V per cell. Any lower or higher in voltage and the cell will almost certainly be irreversibly damaged (reduced capacity or total inability to accept a charge). Furthermore, a damaged cell may become unstable which can be very dangerous (increased fire risk). A LiPo alarm / voltage tester is therefore an essential piece of kit to monitor the status of your individual cells and avoid damaging them.
Most pilots who fly without a telemetry feed use a LiPo Alarm on board their craft to alert them as to when it’s time to land – it’s recommended to set your alarm to 3.6V to give you enough time to land safely.
SHIPPING & DELIVERY
We are based in the UK and ship to most destinations worldwide.
We dispatch orders during the times shown on our Dispatch Schedule. Orders placed before the daily dispatch cutoff will ship the same day (subject to stock availability). Orders placed after the cutoff will ship on the next scheduled dispatch day.
A confirmation email is sent once your order has been packed. If you need to amend your order, please contact us as soon as possible — once shipped, we’re unable to make changes.
We work with trusted delivery partners including Royal Mail, DHL, UPS, Fedex and Parcelforce. If you have a delivery requirement or would like to arrange collection, please get in touch.
Please fill in the fields below with the shipping destination details in order to calculate the shipping cost.
Shipping to the UK
- Order before the daily dispatch cutoff for same day dispatch.
- FREE delivery available on qualifying orders over £99 (under 1kg).
For small, low-value orders, Royal Mail First Class is our most economical option. Royal Mail Tracked 24 is the most popular choice, offering full tracking and flexible delivery options. For guaranteed next working day delivery, we recommend Royal Mail Special Delivery.
Royal Mail delivers to residential addresses Monday to Saturday, while courier services (including DHL) typically deliver Monday to Friday.
International Postage
- USA orders: Import duties and taxes are prepaid by us — no additional customs charges on delivery.
- Other destinations: Customs duties or import taxes may apply and are the responsibility of the recipient.
Smaller, lower-value orders may be sent via Airmail or tracked postal services. Economy road and express air courier options are available depending on destination. For faster delivery, we recommend express air courier services such as DHL Express, which typically deliver within 1–2 working days across Europe and a few working days for most other destinations.
Related products
Reviews
Clear filtersThere are no reviews yet.