What features should I look for on cordless hand held trimming systems

All cordless hand held trimming systems should offer:

• Durable and sharp, precision-ground, diamond ground or laser-cut blades for quick, precise trimming.
• When multi-bladed - a quick and easy blade changing system
• Powerful lithium-Ion batteriesLow weight for ease of use

And on more advanced models you may find...

• A battery discharge indicator
• Ergonomic handles and soft grips
• Anti-stall mechanism
• Telescopic handles for horizontal and vertical edging or reaching awkward areas (guidance wheels included)