The Pearstone NP-120C Lithium-Ion Battery Pack is a budget-conscious alternative for the Casio NP-120. Small and lightweight, Lithium-ion batteries can be charged or discharged at any time without developing memory effects.
| Chemistry | Lithium-ion |
| Capacity | 650mAh |
| Output Voltage | 3.7V |
| Dimensions | Not specified by manufacturer |
| Weight | Not specified by manufacturer |