Product comparison · Charge Controllers
Redodo 40A MPPT Controller vs BougeRV Sunflow 40A MPPT Controller
The Redodo 40A MPPT Controller scores 5.7 and ranks 8th of 27 in Charge Controllers; the BougeRV Sunflow 40A MPPT Controller scores 4.9 and ranks 24th of 27 in Charge Controllers. The 40A MPPT Controller leads on warranty & support.
All 13 Redodo products 
Redodo 40A MPPT Controller
$145 · 8th of 27 in Charge Controllers
Buy Now- Warranty & Support — 4 against 1
All 22 BougeRV products 
BougeRV Sunflow 40A MPPT Controller
$150 · 24th of 27 in Charge Controllers
Buy NowAcross everything we scored, Redodo 40A MPPT Controller sits 0.75 ahead — led by warranty & support.
Verdict
40A MPPT Controller ahead · +0.75 (5.7 vs 4.9)Pick the Redodo 40A MPPT Controller when
Warranty & support matters4vs1
Operating range matters5vs3
Efficiency matters6vs4
Pick the BougeRV Sunflow 40A MPPT Controller when
A criterion we do not score decides itthe Sunflow 40A MPPT Controller leads on none of the ones we do
Scored 15 October 2026 from published specs and owner reviews. We don't buy or test units. How we score
Most common complaints
Redodo 40A MPPT Controller
Overall score 5.7- LCD screen has no backlight
BougeRV Sunflow 40A MPPT Controller
Overall score 4.9- Does about 60 percent of what is advertised, per one owner
From each product's own owner reviews and retailer ratings.
Usability Redodo 40A MPPT Controller and BougeRV Sunflow 40A MPPT Controller, scored 0 to 10
Warranty & SupportRedodo 40A MPPT Controller: 4 (higher)BougeRV Sunflow 40A MPPT Controller: 1
Redodo 40A MPPT Controller: 3 Years · BougeRV Sunflow 40A MPPT Controller: 1 Year.
Redodo 40A MPPT Controller
- 3 years for controllers, no proration stated
BougeRV Sunflow 40A MPPT Controller
- 18 months, prorated after year one, one rung down
- Policy: one 18-month term for all BougeRV controllers and inverters; replacements after year one at a pro-rata price
EfficiencyRedodo 40A MPPT Controller: 6 (higher)BougeRV Sunflow 40A MPPT Controller: 4
Redodo 40A MPPT Controller
- Lower of two conversion figures scored: 97 percent in the manual
- Conflict: the product page gives up to 98 percent peak conversion
- Tracking: up to 99 percent on the page, 99.9 percent in the manual, not scored
BougeRV Sunflow 40A MPPT Controller
- Manual rates conversion above 95 percent; the page's 99 percent is not scored
- Tracking: above 99 percent in the manual, 99.5 percent on the page
- No-load: 10 mA or less
Operating RangeRedodo 40A MPPT Controller: 5 (higher)BougeRV Sunflow 40A MPPT Controller: 3
Redodo 40A MPPT Controller
- 100 V maximum solar input voltage on the spec table
- Panels: up to 600 W at 12 V and 1,200 W at 24 V
- Range: 9 to 32 V battery, MPP from battery plus 3 V to 76 V
BougeRV Sunflow 40A MPPT Controller
- 95 V protection limit scored, under the 100 V listed maximum
- Tracking window: 2 V above battery voltage to 72 V
- Temperature: −31 to 149°F (−35 to 65°C), IP34
Same score
CapacityRedodo 40A MPPT Controller: 6BougeRV Sunflow 40A MPPT Controller: 6
Redodo 40A MPPT Controller
- 40 A, one rung above the typical charge controller
BougeRV Sunflow 40A MPPT Controller
- 40 A rated charging current, on the 40 to 49 A rung
- Solar: up to 600 W at 12 V or 1200 W at 24 V
- Setting: charge current set from 0 to 40 A
FeaturesRedodo 40A MPPT Controller: 7BougeRV Sunflow 40A MPPT Controller: 7
Redodo 40A MPPT Controller
- Bluetooth, 20 A load output, custom profile and remote sensor; no linking
- Sensor: low-temperature charge protection, off by default; compensation for lead acid
- Ports: RS485 (RJ12), LCD with four buttons and four LED indicators
- Setup: the LiFePO4 profile needs the system voltage set by hand
BougeRV Sunflow 40A MPPT Controller
- Bluetooth, lithium profile, temperature sensor, 20 A load; no networking
- Cold cut-off: stops lithium charging at 0°C, resumes at 2°C; off by default
- Ports: TTL, RJ45 RS485 and an optional CAN port for RV-C
VerificationRedodo 40A MPPT Controller: 2BougeRV Sunflow 40A MPPT Controller: 2
Redodo 40A MPPT Controller
- No UL 458, UL 1741 or CSA listing published; no directory record found
BougeRV Sunflow 40A MPPT Controller
- No directory listing for BJ2440N; no certification claimed
- Standard: UL 1741 needed for a listing (UL 458 or CSA 107.1 also count)
- Searched: Intertek UL CEC LabTest Certipedia SGS
- Holder: Guangzhou Boju Information Technology Co. Ltd.
- Not run: TÜV SÜD directory blocked
Not scored for either
- LifespanRedodo 40A MPPT Controller: not scoredBougeRV Sunflow 40A MPPT Controller: not scored
- ValueRedodo 40A MPPT Controller: not scoredBougeRV Sunflow 40A MPPT Controller: not scored
Social score about the Redodo 40A MPPT Controller and the BougeRV Sunflow 40A MPPT Controller
RedditRedodo 40A MPPT Controller: 6 (higher)BougeRV Sunflow 40A MPPT Controller: 5
The Redodo 40A MPPT Controller reading covers the whole brand; the BougeRV Sunflow 40A MPPT Controller reading covers the whole brand.
Redodo 40A MPPT Controller
Read the full summary
- Volume: Reddit holds only a few owner comments on Redodo, and none reports a failure
- r/boating: an owner says his Redodo batteries had given no issues (August 2025)
- r/SolarDIY: an owner says his Redodo held its voltage high right up to the cutoff, and that he had not been charging it to 100 percent (November 2024)
- Recommended: an r/SolarDIY commenter recommends Redodo for its BMS support in hot climates (April 2026)
BougeRV Sunflow 40A MPPT Controller
Read the full summary
- Panels: an r/SolarDIY owner who paid $132 each for several 200 W bifacial panels found visible busbar defects on three of them (July 2025)
- Support: the same owner said BougeRV support sent replacements for the defective panels within a couple of days (July 2025)
- Delivery: an r/solar poster said a charge controller was delivered to another address in his city and called BougeRV a ripoff (April 2026)
- Owners: in an r/GoRVing thread on RV solar, several owners named BougeRV 200 W bifacial or TOPCon panels in their setups (November 2025)
GoogleRedodo 40A MPPT Controller: 6BougeRV Sunflow 40A MPPT Controller: 7 (higher)
The Redodo 40A MPPT Controller reading covers the whole brand; the BougeRV Sunflow 40A MPPT Controller reading covers its product line.
Redodo 40A MPPT Controller
Read the full summary
- Overall: forum owners report mixed results with Redodo batteries
- Faults: on DIY Solar Forum the owner of three 12 V 280 Ah batteries in an RV found them discharging unevenly and two BMSs tripping on overcharge from shore power (April 2026)
- Storage: the owner of a 12 V 200 Ah bought in January 2022 got only 55 to 65 Ah after 18 months in storage, 45 months into its prorated warranty (October 2025)
- iRV2: an owner running Redodos in parallel reports no issues after following Redodo's advice to rebalance them every six months (October 2025)
- iboats: an angler calls his 100 Ah trolling and 20 Ah cranking batteries great so far (April 2025)
- Measured: on DIY Solar Forum a boat owner measured 104 Ah from a new 12 V 100 Ah (May 2023)
BougeRV Sunflow 40A MPPT Controller
Read the full summary
- Scope: Love Your RV & Boat reviewed the Sunflow 60A, which shares this controller's manual, not this size itself
- Use: he ran the 60A on 940 W of rooftop solar in his fifth wheel for two months without an issue, praising its fanless aluminum heat sink and screw terminals (July 2026)
- Disclosure: he received the 60A free from BougeRV and links BougeRV and Amazon with affiliate links; his video repeats the written review and counts once
YouTubeRedodo 40A MPPT Controller: 7 (higher)BougeRV Sunflow 40A MPPT Controller: 6
The BougeRV Sunflow 40A MPPT Controller reading covers the whole brand.
Redodo 40A MPPT Controller
Liked
- Bluetooth app monitoring worked
- Better than expected from a battery brand
- Built-in Bluetooth with no add-on module
Read the full summary
- Off Grid Basement: Redodo sent the controller free; the video is marked as paid promotion and gives a Redodo discount code and Amazon affiliate links
- Verdict: reviewed this 40 A MPPT with built-in Bluetooth and was pleasantly surprised by a controller from a battery company (August 2023, about 4,900 views)
BougeRV Sunflow 40A MPPT Controller
Read the full summary
- Jeremiah Mcintosh: found the Yuma 200 W CIGS did not disappoint in low light or aimed at the sun against his 200 W foldables (April 2023, about 136,000 views)
- Disclosure: he offers 15 percent off bougerv.com with the code McIntosh and links Amazon affiliate pages
- The Off-Grid Mountain Homestead: tested a CIGS panel in full sun and cloud and called it very nice and ultra lightweight (September 2024, about 1,100 views)
- Disclosure: he received the panel free and links it through Amazon Associates
- StoneBroke Adventure: said the 24 V 200 W N-type bifacial outperformed its rating in real-world use (October 2025), in a video marked as including paid promotion
AmazonRedodo 40A MPPT Controller: 7 (higher)BougeRV Sunflow 40A MPPT Controller: 6
Redodo 40A MPPT Controller
Liked
- Bluetooth works with plug-and-play setup
- Easy to install
- Solid, heavy-feeling build
Complaints
- LCD screen has no backlight
Read the full summary
- Listing: Redodo's Amazon US listing for the 24V 40A Bluetooth MPPT (B0C4FDH9SW)
- Rating: 4.5 from 111 ratings (October 2026)
- Spread: 75 percent five-star, 10 four-star, 8 three-star, 5 two-star and 2 one-star
BougeRV Sunflow 40A MPPT Controller
Liked
- Works great, per a recent owner
- Charges and maintains LiFePO4 well in a fifth wheel
Complaints
- Does about 60 percent of what is advertised, per one owner
Read the full summary
- Rating: 4.3 from 125 ratings on BougeRV's own Amazon US listing for the 40A, 68 percent five-star and 5 percent one-star (October 2026)
- Praise: a verified owner titled his review works great (October 2026); another, who builds mobile command centers, says it charges and maintains the LiFePO4 bank in his fifth wheel well
- Shortfall: that same owner gave three stars, saying it does about 60 percent of what it is advertised to do (read October 2026)
- Discount: BougeRV runs a page on its own site rewarding verified Amazon orders, so this pool scores one point lower
Unless a row says otherwise, both readings are about these exact models.
Redodo 40A MPPT Controller vs BougeRV Sunflow 40A MPPT Controller: pros and cons
Redodo 40A MPPT Controller
Overall score 5.7Strengths
- Bluetooth app built in
- Temperature sensor included
- Switchable DC load output
- Custom charging profile
- No-load loss of 12 mA at 12 V
Drawbacks
- Conversion efficiency stated two ways
- Short panel strings only
- Indoordry mounting only
- LiFePO4 setup needs a manual step
- No parallel or networked operation
BougeRV Sunflow 40A MPPT Controller
Overall score 4.9Strengths
- Phone monitoring built in
- Lithium cold-charge cut-off
- Load output for lights and small loads
- Temperature sensor in the box
- Fanless heat-sink case
Drawbacks
- Low PV voltage ceiling for long strings
- Efficiency figures disagree across BougeRV's documents
- Short warrantyprorated after year one
- No networking between controllers
- Cold-charge cut-off is off by default
Redodo 40A MPPT Controller vs BougeRV Sunflow 40A MPPT Controller: the numbers
Price, scores and rank, then only the specs that differ. Green marks the side with more.
24th of 27 in Controllers
- WarrantyRedodo More3 YearsBougeRV1 Year
- WeightRedodo4.4 lbBougeRV3.9 lb
Same on both
- 12/24 V autoSystem voltage
- Not listedCapacity
- Not listedPanel power
- Not listedAC output
- 40-49 ACharge current
- Not listedCell type
- Not listedLow-temperature charging
- Bluetooth built inMonitoring
- None verifiableSafety listings
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More from Redodo
No other scored Redodo products in Charge Controllers.
More from BougeRV 3 scored in Charge Controllers
- Nothing we record differs.
- Charge current: 30-39 A, not 40-49 A
Redodo 40A MPPT Controller vs BougeRV Sunflow 40A MPPT Controller: common questions
Is the Redodo 40A MPPT Controller better than the BougeRV Sunflow 40A MPPT Controller?
On our scores, the Redodo 40A MPPT Controller is ahead, 5.7 against 4.9. The Redodo 40A MPPT Controller leads on warranty & support (4 against 1), operating range (5 against 3) and efficiency (6 against 4).
Which has the longer warranty, the Redodo 40A MPPT Controller or the BougeRV Sunflow 40A MPPT Controller?
The Redodo 40A MPPT Controller: 3 Years, against 1 Year.
What do owners say about the Redodo 40A MPPT Controller and the BougeRV Sunflow 40A MPPT Controller?
Across 4 independent sources scored for both, the Redodo 40A MPPT Controller is ahead on Reddit, YouTube and Amazon; the BougeRV Sunflow 40A MPPT Controller is ahead on Google.
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Scores calculated 15 October 2026 · Products excluded where fewer than two independent sources cover them · · How we score