EF ECOFLOW Portable Power Station DELTA 2, 1024Wh LiFePO4 (LFP) Battery, 1800W AC/100W USB-C Output vs Retevis RT97S Portable GMRS Repeater
Head-to-head spec comparison to help you pick the right kit component for your needs.
EcoFlow
$449
Retevis
$340
Verdict
It's a Tie
The EF ECOFLOW Portable Power Station DELTA 2, 1024Wh LiFePO4 (LFP) Battery, 1800W AC/100W USB-C Output and Retevis RT97S Portable GMRS Repeater are evenly matched. Your choice depends on which features matter most to you.
Spec-by-Spec Comparison
| Spec | EF ECOFLOW Portable Power Station DELTA 2, 1024Wh LiFePO4 (LFP) Battery, 1800W AC/100W USB-C Output | Retevis RT97S Portable GMRS Repeater |
|---|---|---|
| Kit Role | Caregiver room power station; supports tested CPAP and some concentrator setups, not medical-grade UPS | GMRS repeater hub |
| Category | power-station | gmrs-repeater |
| Renter Install | no install | permission required |
| Building Fit | plug-in | licensed RF relay |
| Max Power | 1800 W | 5 W |
| Channels | N/A | 8 |
| Clear LOS Range | N/A | N/A |
| Coverage | N/A | N/A |
| Battery Life | N/A | N/A |
| Water Resistant | No | No |
| SOS Button | No | No |
| Weather Alerts | No | No |
| License Required | No | Yes |
| Subscription Required | No | No |
| Subscription/mo | 0 $ | 0 $ |
| Price | $449 | $340 |
| Rating | 9.0/10 | 8.2/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
EF ECOFLOW Portable Power Station DELTA 2, 1024Wh LiFePO4 (LFP) Battery, 1800W AC/100W USB-C Output
Pros
- Pure sine wave inverter (1800W continuous, 2700W surge) supports many CPAP machines and some oxygen-concentrator setups within tested wattage limits
- 1024Wh LiFePO4 (LFP) battery can carry many non-humidified CPAP setups overnight after a full-device test
- Charges to 80% in ~50 minutes via AC wall outlet — fast top-up between storms or before a predicted outage
- Six AC outlets (US model) plus USB-C 100W; enough for a measured bedside load such as CPAP, lamp, phone, or medication fridge
- 10-year LFP battery lifespan (~3000 cycles to 80%) vs. ~500 cycles for older lithium chemistries
Cons
- 26 lbs — heavy for a frail elderly user to move alone; needs a fixed bedside location
- App-based remote monitoring requires smartphone familiarity (app optional, not required for basic use)
- At $449 MSRP it is the most expensive item in this kit; sale prices of $399–$428 are common
- Not a medical-grade UPS or life-support backup; EcoFlow lists 30ms EPS transfer and says compatibility must be tested
- EcoFlow warns against using it for medical emergency equipment related to personal safety without device/manufacturer guidance
Retevis RT97S Portable GMRS Repeater
Pros
- Adds a real RF relay layer no handheld can provide
- Purpose-built GMRS repeater with built-in duplexer
- Portable AC/DC format can support temporary building or neighborhood drills
- Pairs with repeater-capable handhelds like the BTECH GMRS-V2
- Best fit for licensed building captains and prepared neighborhood radio leads
Cons
- Not a renter gadget; needs permission, antenna placement, and power planning
- No organization-wide license shortcut; unrelated GMRS operators still need their own licenses
- Shared repeater use needs a responsible licensed operator, call-sign discipline, and written operating rules
- Bad antenna placement inside concrete can erase the benefit
- More complex and easier to misuse than simple handheld radios
Our Verdicts
EF ECOFLOW Portable Power Station DELTA 2, 1024Wh LiFePO4 (LFP) Battery, 1800W AC/100W USB-C Output
The DELTA 2 is a strong caregiver-room power station, not a universal medical backup. Its 1800W pure-sine inverter and 1024Wh battery can run many CPAP and some oxygen-concentrator setups within wattage and surge limits, but the exact machine, cable, humidifier setting, and AC timeout behavior must be tested. Use it for capacity; use a dedicated CPAP battery or medical-grade backup when uninterrupted failover or life-safety equipment is involved.
Retevis RT97S Portable GMRS Repeater
The RT97S is the advanced GMRS product OutageKit was missing: a repeater for a licensed building radio lead trying to make floor-to-lobby or neighborhood RF coverage more reliable. It is not for casual renters, condo-board blanket use, or internet-linked networks, and it does not bypass GMRS licensing or station-identification rules. It belongs only when a responsible licensed operator can place the antenna, power the unit, and run a written channel plan.
EF ECOFLOW Portable Power Station DELTA 2, 1024Wh LiFePO4 (LFP) Battery, 1800W AC/100W USB-C Output
$449