Colorado Peak PowerEcoFlow power stations in Colorado
EcoFlow has the widest range, from plug-in stations to the installed DELTA Pro Ultra X whole-home system. The DELTA Pro 3 is the simplest 240 V option for a well pump or transfer switch. Note that it won't charge below freezing, so keep it inside.
- Headquarters
- Shenzhen, China
- Where it’s made
- China.
- Warranty
- 5 years on DELTA Pro 3 and Pro Ultra
- Altitude
- DELTA Pro Ultra rated to 9,842 ft; others not published
- Cold weather
- DELTA Pro 3 charges only above 32°F
- Where to buy
- Direct from the brand and through retailers
Models for home backup
DELTA Pro Ultra X (whole-home system: inverter + Smart Extra Batteries)
| Capacity | 6,144 Wh per battery pack; the standard kit has 2 packs (12.288 kWh) |
|---|---|
| Continuous output | 12,000 W at 120/240V per inverter; up to 36 kW with 3 inverters in parallel |
| Surge | Adaptive Start handles 'surges up to 45 kW' (manufacturer claim) |
| Expands to | 61.44 kWh per inverter (10 packs); 184.32 kWh with 3 inverters (30 packs). Marketing rounds this to 180 kWh. |
| 240 V | Yes (120/240V, 60 Hz; NEMA 5-20, L14-30 and 14-50 outlets) |
| Battery chemistry | LFP |
| Home connection | Works with Smart Home Panel 3 (32 circuits) or Smart Gateway (6 circuits). Switchover is under 10 ms standalone and under 20 ms with SHP3 or Gateway. |
| Solar input | 10 kW over 2 ports (80–500V) |
| Installation | Installed through an EcoFlow Authorized Installer. Smart Home Panel 3 has to be installed before use. |
DELTA Pro Ultra (inverter + 6 kWh batteries)
| Capacity | 6,144 Wh per battery |
|---|---|
| Continuous output | 7,200 W at 120V/240V per inverter |
| Surge | 10.8 kW peak (from the manual's resistive-load table; no separate surge rating is published) |
| Expands to | Up to 5 batteries per inverter (about 30 kWh). Up to 15 batteries across 3 inverters (about 90 kWh). |
| 240 V | Yes |
| Battery chemistry | LFP |
| Home connection | Compatible with the EcoFlow Smart Home Panel family |
DELTA Pro 3
| Capacity | 4,096 Wh |
|---|---|
| Continuous output | 4,000 W (6,000 W with X-Boost) |
| Surge | 8,000 W |
| Expands to | 12 kWh per unit with 2 DELTA Pro 3 Extra Batteries. Multi-unit setups reach 36–48 kWh. |
| 240 V | Yes (NEMA 6-20R and L14-30R). The 120V and 240V outputs cannot be used at the same time; you switch between them. |
| Battery chemistry | LFP (4,000 cycles to 80%) |
Warranty
5 years each on the DELTA Pro 3, DELTA Pro Ultra inverter, DELTA Pro Ultra X inverter and DELTA 3 Plus. Smart Home Panel 2 and 3 get 10 years; the original Smart Home Panel gets 3 years. The DELTA Pro 3 product page describes its warranty as 3 years plus 2 more with app registration. The policy table lists 5 years with no registration extension, so the two EcoFlow pages disagree. Coverage requires purchase from EcoFlow or an authorized seller, use in the U.S., and proof of purchase. Service is mail-in. The policy states no capacity-retention or throughput guarantee, and normal battery wear is excluded. A June 8–July 3, 2026 promotion added a 6th year on DELTA Pro Ultra X bundles.
Altitude
DELTA Pro Ultra user manual: 'Altitude ≤3,000 m (9,842 ft.)' for both the inverter and the battery. That limit is below the elevation of some Colorado mountain towns, such as Leadville (about 10,150 ft). No altitude rating was found for the DELTA Pro 3 (its manual does not mention altitude) or for the DELTA Pro Ultra X spec page.
Cold weather
DELTA Pro 3: discharge -10 to 45°C (14–113°F), charge 0 to 45°C (32–113°F). DELTA Pro Ultra: charge and discharge both -20 to 45°C (-4 to 113°F). Its battery self-heats below 0°C (32°F), and charge heating needs at least 250 W of input. DELTA Pro Ultra X: battery -20 to 45°C (-4 to 113°F), inverter -20 to 50°C. Its batteries heat themselves in extreme cold so they can charge.
Monitoring and the app
EcoFlow app over Wi-Fi (2.4 GHz) and Bluetooth; the DELTA Pro 3 also has CAN. Off-grid: the DELTA Pro 3 manual says that when Wi-Fi is limited you can manage the unit locally over Bluetooth, so basic control works without internet. Remote monitoring needs internet.
Recalls
What a Colorado homeowner should know
- The DELTA Pro Ultra X is sold as a professionally installed whole-home system: 12 kW continuous output, 120/240V, and Smart Home Panel 3 or Smart Gateway transfer. EcoFlow quotes a 7-day install timeline counted from permit issuance.
- The DELTA Pro Ultra manual caps altitude at 3,000 m (9,842 ft). That matters for homes in high Colorado mountain towns; the Front Range is well below it.
- The DELTA Pro 3 is the simplest 240V option: a plug-in station with L14-30R and 6-20R outlets. It is LFP and expands to 12 kWh on one unit.
Check whether EcoFlow fits your list before you buy: the calculator shows running watts, starting watts, and hours of runtime.
Product links may earn Colorado Peak Power a commission at no cost to you.
Reviewed October 29, 2026 from manufacturer documents and CPSC records. Specs and terms change; confirm with the manufacturer or your installer. Colorado Peak Power is independent of EcoFlow.
Sources
- cpsc.gov /Recalls/2026/EcoFlow-Technology-Recalls-Delta-Max-2000-Power-Stations
- ecoflow.com /us/delta-pro-ultra-x/specs
- us.ecoflow.com /products/delta-pro-ultra-x
- cdn.shopify.com /s/files/1/0551/8462/1620/files/EcoFlow_DELTA_Pro_Ultra_User_Manual.pd
- us.ecoflow.com /products/delta-pro-3-portable-power-station
- us.ecoflow.com /pages/warranty-policy
- bsai.com.mx /cdn/shop/files/EcoFlow_DELTA_Pro_3_User_Manual.pdf
- techcrunch.com /2022/05/02/ecoflow-glamping-portable-battery