Easy! If you need to warm high volume of fluids (say, 2-3 liters or more), be prepared to back-to-back calls, start treating patients bedside, get prepared to MCI, or work with rapid intermittent (bolus) flow infusers, the Extra Power battery is your best options.
If you need to through the warmer into a bag and walk with it, the lite battery is your best option.
Still not sure? Contact us!