Solarmax 100 Watt Solar Panel,charger Controller, 300watt Inverter,

solarmax solar panel have  high efficiency solar modules are constructed from 36
polycrystalline, (12V modules) or 72 cells (24V modules) cells. The
cells are individually tested and matched for optimum performance before
being built into the protective module structure. A Tedlar® base is
used and ethylene vinyl acetate encapsulant. High transmission tempered
glass protects the cells from the front and a high strength polymer
sheet at the rear. A reinforced aluminium frame completes the laminate
structure which is fully sealed against moisture and protected from
environmental and mechanical damage.Most common mistake people is mixing of batterys. car batterys are not good in solar storage and have internal resistancefor more information, contact the seller  for guideline

A basic charge controller simply performs the necessary function of ensuring that your batteries cannot be damaged by over-charging, effectively cutting off the current from the PV panels (or reducing it to a pulse) when the battery voltage reaches a certain level.