What are the maintenance points for garden light batteries in cold conditions?

Battery life: Battery life is determined by many factors such as discharge rate, depth of discharge, number of cycles and operating temperature, so battery life is difficult to predict. For photovoltaic systems, there are few lead-acid batteries with a lifespan of more than 15 years, usually 5 to 10 years. Nickel-cadmium batteries can last longer under the same conditions, and can work stably for more than 15 years under optimized conditions. At the end, let's talk about the maintenance of garden light batteries and some points of use in cold conditions. In colder conditions, the electrolyte of a lead-acid battery will presumably freeze. Freezing temperature is a function of battery state of charge. When the battery is fully discharged, the electrolyte freezes at a few degrees below zero, and when the battery is fully charged (the weight is about 1.24 times the nominal weight at this time) the electrolyte can withstand a low temperature of minus 50 °C. In cold climates, it is common to place the battery in a battery box and bury the battery box in the ground to maintain a constant temperature. Nickel-cadmium batteries will not break in cold climates. We know that any battery needs regular maintenance, even if it is a sealed maintenance-free battery, we should regularly check whether it is strong, clean and free of damage. For the electrolyte battery, the electrolyte should always maintain the state of fully immersed plates, and the voltage and calibration weight must also meet the requirements.