Mighty Max 12V 2.9AH SLA Replacement Batteries, 2-Pack
$42.99 on Amazon.com (as of September 26, 2026, 1:12 AM EST) View details ↗
Upgrade your essential equipment with the Mighty Max Battery 12V 2.9AH F1 SLA Replacement Battery 2-Pack, engineered to provide reliable and consistent power. Specifically designed for compatibility with the Invacare Reliant 450 Patient Lift, these UL-certified Sealed Lead Acid (SLA) rechargeable batteries offer a maintenance-free power solution. Featuring an advanced AGM spill-proof design, this dependable 2-pack resists shocks and vibration while delivering high discharge rates across a wide operating temperature range. Whether deployed in demanding high-temperature environments or cooler conditions, these durable units ensure uninterrupted operational readiness for your critical devices.
Built for versatile installation, these rechargeable batteries can be securely mounted in virtually any position to accommodate specific equipment configurations. Each unit measures 3.19″ x 2.25″ x 4.13″ and features standard F1 terminals for straightforward integration. Please note that this listing includes the replacement batteries only; wire harnesses and mounting accessories must be retained from your original setup or sourced separately. Backed by a full one-year warranty, this multi-pack provides an efficient way to restore peak performance and dependable longevity to your compatible patient lift system.
| Voltage | 12V |
|---|---|
| Capacity | 2.9AH |
| Dimensions | 3.19″ x 2.25″ x 4.13″ |
| Terminal Type | F1 |
| Compatibility | Invacare Reliant 450 Patient Lift |





