GYS BT551 Start-Stop Battery Tester (BT551)

Code: BT551
  • £317.52 (ex. VAT)
  • (Check Out Our offers)
Item in Stock | Usually dispatched within 48 hours

The BT551 START-STOP is an easy-to-use highly precise professional battery tester with an integrated printer.
Multifunction device, it can perform 3 types of tests :

  • 6-12V battery (tests voltage & charge state, cold cranking Amps & battery health etc)
  • 12-24V starter motor (tests starting voltage - cranking voltage test)
  • 12-24V alternator circuit (tests no load voltage and charging voltage as well as current undulation (ripple) during the charge)

Test 3 lead-acid battery types from 7 to 230 Ah :

  • Non sealed batteries SLI
  • START / STOP batteries (AGM & EFB)

Tolerance : CCA < ± 5% Voltage ± 0,05%

Special feature to test the battery’s internal resistance.

Multi-standards :

  • SAE : 40 to 2000 CCA
  • DIN : 25 to 1300 CCA
  • IEC : 30 to 1500 CCA
  • EN : 40 to 2100 CCA
  • JIS : depending on Japanese battery type number

Highly precise thanks to its dynamic resistance measuring technology that minimises battery discharge and displays a reliable result not skewed by :

  • surface charge
  • parasitic load (lights, various indicators, etc)
  • contact defaults (battery terminal corrosion/oxidation, loose terminals, etc)

Can test a battery out of the vehicle or in-situ.

Tests deeply discharged batteries from 1.5 V.

Protected against polarity reversal.

Instantaneous analysis:

  • Battery voltage (1.5V to 30V)
  • Available starting power (real or in %)
  • Charge state and battery health (%)
  • Adjustable backlighting

Multilingual interface :

  • English / French / German / Spanish / Italian / Portuguese / Turkish / Japanese


Prices on Application - Contact us today on (028) 7131 2225 for further details.


* FREE Delivery on all orders over £50 / €70 to UK & Ireland *

Delivery Service

Below £50 / €70

Above £50 / €70

Delivery Time

Northern Ireland



Next Day
(if ordered by 14:00)

Republic of Ireland



Next Day
(if ordered by 14:00)

United Kingdom



1-3 Days
(if ordered by 14:00)




5-7 Days
(if ordered by 14:00)

Bulky Items

FREE Delivery to NI, ROI & UK Mainland on all Launch 2-Post Car & Van Lifts

Please contact us directly for prices, and to arrange carriage for all other bulky orders and heavy equipment.

When will my order be dispatched?

We endeavour to get your order to you in the shortest period available.

Delivery may take longer in the following instances:

  • The availability of one of your order items may have changed from when you purchased
    If this is the case, we will e-mail to help you find an alternative
  • If it is a UK / ROI Bank Holiday period

Check my Order Status

Please note, stock is updated hourly and is not live.  All unfulfilled orders will be placed on back order where applicable.

To confirm stock availability, please call (028) 7131 2225 Monday to Friday, 7.30 am to 4.30 pm.

Please contact us at any point and we can give you status of your delivery.

*Please note all prices exclude VAT

Please contact us for information on Payment & Security.

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Product Information:1+ Quantity qty
BT551 Start-Stop Battery Tester (BT551) 1+ £317.52 (ex. VAT) 0 In stock
£317.52 (ex. VAT)
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