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Description
Anker 3840Wh SOLIX F3800 Plus w/ Expansion Battery ModuleFeatures Unprecedented Solar: Max. 3,200W solar input with dual 11 165V MPPT controllers. Gas Generator Charging: Compatible with 240V gas generators (6,000W bypass) for extended power outages. Expandable Capacity: Starts at 3. 84kWh, expandable up to 26. 9kWh for increased energy storage. Dual Voltage AC Output: 120V & 240V, 6,000W AC output to power home appliances; expandable up to 12,000W. Remote Monitoring & Control: Monitor and manage power
Features
- Unprecedented Solar: Max. 3,200W solar input with dual 11-165V MPPT controllers.
- Gas Generator Charging: Compatible with 240V gas generators (6,000W bypass) for extended power outages.
- Expandable Capacity: Starts at 3.84kWh, expandable up to 26.9kWh for increased energy storage.
- Dual-Voltage AC Output: 120V & 240V, 6,000W AC output to power home appliances; expandable up to 12,000W.
- Remote Monitoring & Control: Monitor and manage power settings via the Anker app with Wi-Fi/Bluetooth.
- Long-lasting Performance: 5-year warranty, with an lifespan of 10+ years using EV-grade LFP batteries.
- EV & RV Charging: Powers EVs and RVs directly through NEMA TT-30P or L14-30 ports.
What's in The Box
- Transfer Switch
- (1) Transfer Switch
- (1) SS2-50R to L14-50P Power Cord
- (50A, 3 m)
- (1) User Manual
- (1) Warranty card
Warranty
- 5 Year Limited Factory Warranty
- 30 Day Satisfaction Guaranteed
Specifications
| SKU | B17901121 |
| Brand | Anker |
| Capacity | 3,840Wh |
| Battery Chemistry | LFP, 3,000+ cycles |
| Expandable Capacity | Up to 6 × Expansion Batteries (3.84kWh each) |
| AC Input | 120V~ 15A Max (< 3hrs) / 12A Max (continuous), 60Hz, L+N+PE |
| AC Input Power (Charging) | 1800W Max |
| AC Input Power (Bypass Mode) | 1440W Max |
| Solar Panel Input | 11-165V ⎓ 17A Max (1600W Max Each) |
| Anker SOLIX Generator Port | 60V Max, 120A Max |
| Car Charger Output | 12V ⎓ 10A |
| HPP & Generator Adapter Port | 6000W Max (AC Input), 6000W Max (AC Output), 120V/240V, L1+L2+N+PE |
| AC Output Power (Total) | 6000W Max |
| AC Output | 120V~ 20A Max, 60Hz, 2400W Max |
| AC Output (NEMA L14-30R) | 120V/240V~ 25A Max, 60Hz, 6000W Max |
| USB-A Output | 5V ⎓ 2.4A (12W Max Per Port) |
| USB-C Output | 5V ⎓ 3A / 9V ⎓ 3A / 15V ⎓ 3A / 20V ⎓ 3A / 20V ⎓ 5A (100W Max Per Port) |
| Dimensions (L × W × H) | 27.6 × 15.3 × 15.6 in (Including wheels) |
| Net Weight | 136.7 lb |
| Warranty | 5-year warranty |
| BP3800 Expansion Battery | |
|---|---|
| Capacity | 3,840Wh |
| Weight | 72.8 lb |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Tesla cellphone holder
Super highly recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
★★★★★ 5
Smooth, strong, impeccable. reposition to get it just right if you are careful and keep it clean.
super solid. I really love the articulation this offeres. So much flexibility. Iphones natively may be limited in using the full potential of the wattage due to internal limitations on non apple wireless pads, but I'm pretty sure this is faster than the tesla chargers by a lot. the build quality and modern vibe are impeccable.
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Reviewed in the United States on March 10, 2026
★★★★★ 4
A great line of sight phone holder with a few flaws.
Overall this does the job and is priced affordably the pros and cons are as follows:
Pros:
Strong magnet
Solid construction
Great for line of sight
Charges well
Cons:
Charging cable is not long enough to route inside my car
holder tends to droop down slightly with my phone on it (Pixel 7), not so much that it's failing but just not holding it's set position
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Reviewed in the United States on May 12, 2026
★★★★★ 1
Does not swivel and slow charger
As mentioned in another review, you cannot change the angle of the phone so it faces the other way since it does not swivel. Wish I wish I would have known that before placing it. Also, the charger is REALLY slow. It’s slower than the MagSafe chargers I have in my house. I’m not sure if this is defective. I only used it on my way home from work, and I will be returning it.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Tesla Phone Mount for Magsafe: Tesla Car Phone Holder for Tesla Model 3/Y
Okay so I received this Kaisepoch Tesla MagSafe phone mount, compatible with Model 3/Y, through Vine for review, and this is one of those Tesla accessories that’s all about convenience and clean in-car phone positioning. First impression—it’s a MagSafe-style magnetic phone holder designed specifically for Tesla Model 3 and Model Y interiors, so the idea is that it mounts neatly without cluttering the dash and keeps your phone visible for navigation or quick access. In general, Tesla MagSafe mounts like this are designed around either screen-edge or dash-mounted positioning depending on the generation of the vehicle, with magnetic alignment for one-hand docking and removal.
What I like:
MagSafe magnetic attachment makes it quick to dock and remove the phone
Designed specifically for Tesla Model 3/Y interior fitment
Keeps phone in a visible navigation-friendly position
Cleaner setup compared to bulky universal mounts
One-hand operation is convenient while driving
Things to know: Fit can vary slightly depending on Tesla model year/interior generation; Magnetic strength depends heavily on your MagSafe case quality; Placement matters—some positions may affect screen visibility depending on preference; Like most Tesla mounts, long-term stability can depend on heat and surface conditions.
Overall, this is a clean, simple MagSafe Tesla mount option that focuses on easy phone access and minimal clutter. If you want a straightforward mount for navigation and quick phone docking without overcomplicating the setup, this is a solid pick.
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Reviewed in the United States on May 22, 2026