KONNWEI BK300 Bluetooth Car Battery Tester 12 V 24 V Wireless Battery Status Monitor with App Black for Cars Motorcycles and Trucks
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The KONNWEI BK300 Bluetooth Car Battery Tester is a wireless monitor for continuous checking of the status of 12 V and 24 V car batteries. It connects via Bluetooth 5.2 to a mobile app, where you can monitor the voltage in real-time as well as the history of measurements. The device can perform a starting test, voltage test, and vehicle charging system test. During starting, it checks the voltage every 0.01 seconds, accurately capturing the process of engine starting. Thanks to its exceptionally low consumption with an average current of 1 mA, it can remain permanently connected to the battery. Installation is easy — download the BKmonitor app, connect the device to the battery, and pair it via Bluetooth. The app clearly displays graphs of voltage progression during starting and charging, and test results can be easily shared directly from your phone.
Main features:
- Wireless connection — Bluetooth 5.2 and control via the BKmonitor mobile app
- Voltage measurement — real-time battery voltage reading with graphical progression
- Starting test — checks the starting system with voltage readings every 0.01 s
- Charging test — measures voltage at idle under load and ripple (ripple)
- Historical record — stores measured data and shares results from the phone
- Battery range — 6 V 12 V 24 V and 48 V lead-acid starter batteries
- Input voltage — wide range from 3 V to 60 V
- Low consumption — energy-saving operation with an average current of 1 mA
- Dimensions — compact body 5 x 2.5 x 1.5 cm
- Usage — cars, motorcycles, trucks, and boats
Contents of the package:
- 1x KONNWEI BK300 Battery Detector
The KONNWEI BK300 monitor transforms your phone into a clear tool for monitoring the condition of the starter battery. It combines voltage measurement with starting tests and checks of the charging system, allowing you to detect a weakening battery before it leaves you stranded. Compatibility with 6 V 12 V 24 V and 48 V batteries expands its use to cars, motorcycles, and boats. With an input voltage of 3 V to 60 V, it can handle a wide range of vehicles and machines. The compact body easily connects directly to the battery terminals and takes up minimal space. Low consumption allows the monitor to remain connected long-term without concern for draining the battery.
Delivery
Delivery to address€1.59
Estimated delivery: 9 – 20 November
You only pay for delivery once per order, whatever its size.
We will email you the tracking number as soon as the seller makes it available.
Delivery guarantee: if your parcel does not arrive within 75 days of payment, we will refund your money or the goods will be sent to you again – whichever you choose.
Delivery is only possible to addresses in Ireland.
Need more information? Read our article Delivery and Payment.
Returns and Exchanges
Shop with confidence – LUNZO guarantees that your purchase goes smoothly. You arrange returns and exchanges directly with us, so there is nothing to sort out with the seller.
Returns30 days to return without giving a reason
Withdrawal period30 days from receipt of the goods
Deadline to send the goods backWithin 14 days of withdrawing from the contract
Return shipping costsYou pay the postage for sending the goods back to Spain. It is an international parcel, so it usually costs more than a parcel sent within Ireland. We charge no other fee.
RefundWithin 14 days of your notice of withdrawal, using the same payment method you used for the purchase. If you return the whole order, we will also refund the delivery cost.
Crediting of the amountUsually 2–10 working days, depending on the payment method
Product conditionYou may unpack the goods and try them as you would in a shop, and you can return them even without the original packaging
Returns addressQX-BOX AEMALL RETURN
Rotonda Rene Descartes, Parcela 101 – Nave 3
28070 Alcala de Henares, Madrid
Spain
How do I return goods?
- Email us at info@lunzo.ie with your order number and the items you are returning.
- Pack the goods and send them by post to the returns address in Spain.
- Send us the proof of dispatch with the tracking number – this lets us refund you without waiting for the parcel to arrive.
Faulty goodsUp to 6 years to claim for faulty goods
Did the goods arrive damaged, do they not work, is something missing from the parcel or do they not match the description? We will sort it out.
Period for claiming a faultUp to six years from delivery of the goods
RefundWithout undue delay once the claim has been settled, using the same payment method you used for the purchase
How does it work?
- Email us at info@lunzo.ie with your order number and a description of the problem, and attach photographs or a video.
- We will assess it and suggest a solution. Photographs are usually enough – please do not send the goods back until you have received instructions from us.
- We will settle your claim within 30 days at the latest – with a new item, a price reduction or a refund.
If the goods need to be sent back, we will refund the postage for a valid claim (just provide the receipt).
ExchangesA different size, colour or variant
Write to us within 30 days of receipt at info@lunzo.ie with your order number and the variant you are interested in. We usually reply within 24 hours.
If the variant is available, we will send you instructions for the exchange. You pay the cost of sending the original item back; the new variant will be sent to you at no further charge.
Need more information? Read our articles Returns and Exchanges and Faulty Goods.
Payment methods
Credit / debit card
Pay with your Visa or Mastercard through a secure payment gateway. Payment goes through instantly, so we can process your order straight away.
Apple Pay
Pay with a card saved in Apple Wallet on your iPhone, iPad or Mac. You confirm the payment with Face ID, Touch ID or your passcode.
Google Pay
Pay with a card saved in your Google account, on an Android phone or in the Chrome browser. You never have to enter your card number.
Bank transfer
Once you complete your order, we will send you the details for the bank transfer. Your order will be dispatched as soon as the payment reaches our account.
Revolut Pay
Pay with your Revolut account – simply confirm the payment in the Revolut app, without entering any card details. Payment goes through instantly.
Payment is made through a secure payment gateway and your card details are never stored anywhere on our side. We do not charge a fee for any payment method.
Need more information? Read our article Delivery and Payment.
About the seller
This product is sold and shipped by an external seller. LUNZO guarantees you a safe purchase: online payments go through a secure payment gateway, and you handle your order, returns and complaints with us.
The following information has been provided by the product seller, who is responsible for its accuracy. The seller acts as a trader.
Seller:
Jinbao Tengda Mechanical Equipment (Tianjin) Co., Ltd.
Address: No.76, District 3, Zhenbei Village, Xinkou Town, Baodi District, Tianjin, China
E-mail: 728123120@qq.com
Telephone: +86 187 6653 7872
Manufacturer:
Jinbao Tengda Mechanical Equipment (Tianjin) Co., Ltd.
Address: No.76, District 3, Zhenbei Village, Xinkou Town, Baodi District, Tianjin, China
E-mail: 728123120@qq.com
Telephone: +86 187 6653 7872
EU responsible person:
MACYSAN ADVISORS SL
Address: Calle Benito Pérez Galdós, 4, 03201 Elche, Alicante, Spain
E-mail: macysanadvisors@gmail.com
Telephone: +34 653 13 94 97
All products from this seller