Best Hercules 20V batteries and chargers

Start with the 5.0 Ah Extended Performance battery — it's the sweet spot for Hercules 20V tools: enough runtime for saws and grinders without the bulk of the big packs, and it's the pack most people buy two of.

Who the others suit:

• 2.5 Ah Compact — drills, drivers and tight spaces; lightest in hand.
• 5.0 Ah 2-pack bundle — the sensible buy if you're starting from nothing or running two tools.
• 12 Ah — heavy cutting, long jobs, few outlets.
• Chargers — a plain 20V/12V fast charger covers one pack; the dual-port version with USB charges two at once and tops up your phone on site.

Stick to genuine Hercules packs; the chargers are multivoltage, so they handle 12V and 20V batteries.