What type of battery is used in the Sherpa?
Lithium-ion NMC. It has these advantages: stores more energy; smaller and lighter watt for watt; and retains its charge even after months of storage.
Do the Nomad Plus solar panels have a built-in battery?
No. We made the Nomad Plus line of solar panels to be as modular and lightweight as possible, that meant selling batteries as an optional accessory. You can either plug your phone or device directly into the Nomad Plus panel, or pair it with one of our rechargers to store power for later (like at night when you go inside). We recommend a Goal Zero Venture Recharger or Sherpa Power Pack with the Nomad 14 Plus.