Solar charge controllers regulate the current and voltage supplied by solar panels to batteries and prevents damage from overcharging. Power& Solar Systems Ltd offers a wide range of solar charge controllers (10 Amps to 100 Amps), so you can find the right one to fit your needs and budget. PWM, or pulse width moderation, charge controllers, often used for float charging. Our MPPT solar charge controller, or maximum power point tracking controller it is more efficient and will provide more power to the battery. MPPT controllers are especially appropriate for larger solar systems.