12v car battery | Wei Lai Po car battery (certified) | automotive batteries provided by Shenzhen Wei Lai Po Battery Limited. Shenzhen Wei Lai Po Battery Co., Ltd. (www.weilipo.com) is specialized in the "car batteries, car batteries, lead-acid car batteries," the enterprise, the company of "honesty, hard service" concept, to provide you with the most quality products and services. Welcome to inquire! Contact: Mr. Liu. Check the car battery electrolyte level density 4.4 car battery electrolyte density is with a car battery charging and discharging of different levels and change, a drop of electrolyte density is a manifestation of a car battery discharge level. Measuring electrolyte density within each single cell, we can understand the extent of the car battery discharge. When the electrolyte density of less than 1.23 (15 ° C), to deal with a car battery charging. Unscrew each car battery car battery filler cap with a density meter plus liquid from the mouth to suck out the liquid electrolyte hydrometer float float up. When observing the reading 12v car battery, the density should be withdrawn to a position flush with the eye sight, and at the center of the float glass without contact with the wall, so as not to affect the accuracy of readings. Electrolyte density requirement is as a benchmark for measuring at 15 ° C, if the temperature is below 15 ° C or above 15 ° C, you should use a thermometer to measure the actual temperature of the electrolyte, the electrolyte density calculation for correction value. Note: After a battery large current discharge (such as starting the engine) car battery rankings, not immediately measure the electrolyte density, because at this time there is no mixing of electrolyte, the density measurement is not accurate. Correcting electrolyte density of the density of electrolyte at different temperatures have some error, the electrolyte needs to be corrected density value contralateral. 2. What should be noted that after replacing the battery? There may be insufficient capacity of the new battery, including the original battery on the new car factory, may not 100% power. So after replacement of the battery, or buy a new car after car battery ups, you need to let the engine run a bit longer, and thus ensure that the battery can be fully charged. 3, the vehicle for a long time do not open the battery damage it? As the battery will self-discharge, if the vehicle is not the case for a long time may lead to run out of battery power, and ultimately could not start the vehicle or damage to the battery. If the vehicle is not a long time, it is best to keep as much as possible to restart once every 15 days, and allow the engine to run every 20 minutes or so, so that the battery is fully charged again.