The charger or battery is faulty.
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The electric car charger will charge for a while and not charge for a while, generally caused by the failure of two places:
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1, charger failure: When the charger charges the battery, because the power tube is a heating element, it will generate more heat. If the charger voltage output part of the circuit of the component performance is poor, or the component pin welding, it will cause the fault to appear due to the charger temperature rise, but the charging stops; After the charger stops working for a time, the internal temperature of the charger decreases, the components return to normal state, and the charger starts to work again.
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Solution: Open the charger shell, first check whether there is a virtual solder spot, if there is a soldering iron can be welded; If there is no component welding, it is necessary to check the performance of the component itself, especially the power tube.
Mainly due to the formation of a layer of sulfate crystals on the surface of the negative plate inside the battery, and its poor conductivity and large volume will block the pores of the active substance, hinder the penetration and diffusion of the electrolyte, resulting in reduced battery performance, shortened battery life, a full charge, a run off two grids of electricity.