Replacement lithium battery for the Visonic MCS-720 / SR-720B PG2 indoor siren. Choose the Standard 2500mAh or Extended Life 4000mAh option.
| Product type | battery pack |
| Chemistry | lithium |
| Part number | 103-305979, ER18505M |
| Voltage | 3.6 |
| Dimensions | 51 × 18 |
Delivery | Compatibility Check | Important Battery Information |
| All orders are shipped next working day using Royal Mail Tracked 48. Need it quicker? Upgrade to Tracked 24 for priority handling and delivery usually within 1-2 working days. | Please compare the part number, voltage and connector arrangement with the item currently fitted before ordering. | Power down the device before installation. Installation should be completed by a competent person. Do not short-circuit, crush, heat, incinerate or expose batteries to water. |