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Specialist in Multirotor Tech & FPV Equipment

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Digital Battery Capacity Checker

CellMeter-7 Digital Battery Capacity Checker for LiPo LiFe Li-Ion NiCd and NiMh


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PDF icon Operating Instructions1.08 MB

Don’t risk your multirotor by flying on depleted batteries, this great little battery capacity checker puts an end to guessing how much flight time you have left in your batteries. It can be used to check the battery voltage of Lithium batteries including LiPo, LiFe, Li-Ion, as well as NiMH and NiCd batteries. For lithium types the checker will measure the voltage of both individual cells and full battery voltage, and can also indicate the highest voltage cell, lowest voltage cell and difference between, as well as display the percentage of battery capacity remaining.

Checkout the NEW CellMeter-8 for the additon of Sero / ESC tester and Storage discharge functions.

  • High Visibility LCD Display Screen
  • Battery Type: Lithium Polymer (LiPo), Lithium Iron (LiFe), Lithium Ion (Li-Ion), Nickel-Metal Hydride (NiMH) and Nickel-Cadmium (NiCd) batteries
  • Cell Number: NiCd / NiMH (4 - 7 Cells), Lithium Type (2 - 7 Cells)
  • Size: 84x50x16mm

Display Modes:

  • Battery cell voltages
  • Total voltages
  • Lowest cell voltage
  • Highest cell voltage gap between highest cell voltage and lowest cell voltage
  • Remaining battery capacity(%)


  • 1 x CellMeter-7 Digital Battery Capacity Checker
  • 1 x User Manual

Please note that for NiCd and NiMH, the checker will only display the total voltage of NiCd and NiMH batteries.

Please note also, that for Lithium batteries the cell checker will only accept standard JST-XH balance connectors.

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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.

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All information relating to shipping and delivery is stated here. Should you not find what you are looking for, please contact us.

Shipping costs are calculated once items have been placed in your basket during checkout. 

UK Postage: Here at Flying Tech we process orders Monday to Friday and pride ourselves on our quick turnaround of orders. If stocks levels allow, we aim to dispatch orders placed before 4PM the same day with Royal Mail. Our cut off time for courier delivery is earlier; orders must be placed by 1PM for next day delivery with DHL and 1PM for next day delivery with APC. A confirmation email will be sent when your order has been dispatched. If you wish to change your order, please contact us promptly, as we won't be able to make amendments once the order has been shipped.

We are partnered with several delivery companies including Royal Mail, DHL, APC and Parcel Force. If you have a special delivery requirement or would like to arrange a shop collection please contact us. For small low value orders our cheapest delivery service is Royal Mail First Class; this service aims to deliver the next working day including Saturdays and it can be sent recorded for extra peace of mind – please note this is not a guaranteed next day delivery or trackable service.

For a guaranteed next day delivery we recommend Royal Mail Special Delivery or one of our courier delivery options. Royal Mail Special Delivery will arrive by 1PM the next day and for an extra fee can be delivered on Saturdays. APC Overnight offers next day delivery with full tracking and a 2hr time slot pre-delivery text notification. DHL is a good option for larger consignments and remote locations such as Northern Ireland and Isle of Man. All high value orders are fully insured and will likely require a signature on delivery.

FREE shipping in the UK on orders over £99 (this is a signed for service and insured to a maximum of £40). Please note that the offer only applies to orders with a total weight under 1Kg and that a few products are exempt from the offer, such as LiPo batteries.

We Ship Worldwide

International Postage: We are based in the UK, but ship to most worldwide destinations. Postage rates are calculated by the weight and shipment location, the price is quoted during the checkout. Low value order can be sent by Air Mail, but are not insured. Higher value, heavy goods will be sent with DHL or an alternative courier. Orders shipped outside the UK may be subject to customs charges. These charges are additional to any delivery costs and will need to be paid by the recipient.

Flying Tech International Shipping with DHL Express

For our international customers who require a rapid delivery we off a DHL Express service. DHL Express offers NEXT DAY delivery to most European destinations* and a very fast delivery for countries further afield, generally 2-3 days. For country specific estimated transit times, please refer this download.

We reserve the right to modify, remove or add to any of these services at any time. We endeavour to ship all items as fast as possible. If you would like an alternative shipping arrangement to be made please contact us.

Our Delivery Partners:
Royal Mail DHL APC Deutsche Post Parcel Force

*Next day delivery is not guaranteed, it's a delivery aim.