IN THE VEHICLE BATTERY TEST I HAVE GOT THE BEST PERFORMANCE AT THE LOWEST PRICE OF ALL THE DEVICES I HAVE EVER RECEIVED AND IT IS AN EASIER FRIENDLY PRODUCT. YOU DON'T NEED TO PAY A LOT OF MONEY ON SO PROFESSIONAL DEVICES THIS BT171 GIVES YOU MORE THAN WHAT YOU NEED. YOU ALSO MEASURE THE CHARGING ABILITY OF THE ENGINE. YOU DO NOT NEED TO REMOVE THE CAR'S BATTERIES. BEN CE PRICE PERFORMANCE PRODUCT.

I received this item with joy, ordinary quality