L298N Motor Control Board - Diodes

[berwick53]

I'm about to receive through the post a L298N motor control board that will be powered via two 6V 2800mAh batteries in series. Will I need a snubber diode to protect the batteries from back-emf caused through the inductive load aka the motors when the board is connected up? or do the LEDs/diodes on the board perform this function?

The board in question.
http://www.ebay.co.uk/itm/L298N-Stepper-Dual-H-Bridge-Motor-Driver-Module-Controller-Board-for-Arduino-UK-/291272112778?pt=LH_DefaultDomain_3&hash=item43d12bba8a

[electr_peter]

L298N board from eBay has enough diodes to keep you from trouble. If you use rechargeable batteries, you don't have to worry about them recharging. Parallel diode serves to protect transistors from voltage spikes and from general EMI, not the batteries.

In some circuits diode in series with a power source is used if there is significant inductance and PSU cannot take power back. Rechargeable batteries do not need series diode for most cases.