Redodo 40A DC‑DC Charger vs Rich Solar 40A DC‑DC Charger

• EfficiencyRedodo 40A DC-DC Charger: 4 (higher)Rich Solar 40A DC-DC Charger: 1

  Redodo 40A DC‑DC Charger

  • Spec table gives charging efficiency up to 93 percent

  Rich Solar 40A DC‑DC Charger

  • Above 85 percent at 30 percent load, below the 90 percent rung
  • Idle: quiescent current under 0.6 A
• FeaturesRedodo 40A DC-DC Charger: 4 (higher)Rich Solar 40A DC-DC Charger: 1

  Redodo 40A DC‑DC Charger

  • Built-in MPPT solar input, but no Bluetooth, isolation, IP rating or parallel
  • Inputs: uses the alternator when both are available, never both at once
  • Extras: reverse charging of the starter battery and LiFePO4 BMS wake-up

  Rich Solar 40A DC‑DC Charger

  • No solar input, Bluetooth, isolation, IP rating or parallel mode
  • Modes: STD, GEL, AGM, LFP and a POWER supply mode
  • Sensor: RJ11 port for an optional lead-acid temperature sensor
• Warranty & SupportRedodo 40A DC-DC Charger: 3 (higher)Rich Solar 40A DC-DC Charger: 1

  Redodo 40A DC-DC Charger: 2 Years · Rich Solar 40A DC-DC Charger: 1 Year.

  Redodo 40A DC‑DC Charger

  • 2 years for DC-DC chargers, no proration stated

  Rich Solar 40A DC‑DC Charger

  • 1 year, the warranty page's term for unlisted products

Same score

• CapacityRedodo 40A DC-DC Charger: 5Rich Solar 40A DC-DC Charger: 5

  Redodo 40A DC‑DC Charger

  • No wattage stated; 40 A read at 12.8 V as 512 W

  Rich Solar 40A DC‑DC Charger

  • 500 W rated output, on the 500 to 599 W rung
  • Current: 40 A rated, 37 to 43 A operating range
  • Low current: LC terminal halves output to 20 A
• Operating RangeRedodo 40A DC-DC Charger: 8Rich Solar 40A DC-DC Charger: 8

  Redodo 40A DC‑DC Charger

  • Smart-alternator input of 12 to 24 V through the included ACC wire
  • Fixed: starts above 12 V and stops below 11.3 V with the ACC wire
  • Solar: 10 to 30 V and up to 600 W per the manual

  Rich Solar 40A DC‑DC Charger

  • Smart-alternator support through a D+ ignition trigger; fixed thresholds
  • Input: 10 to 16 V, input current up to 68 A
• VerificationRedodo 40A DC-DC Charger: 2Rich Solar 40A DC-DC Charger: 2

  Redodo 40A DC‑DC Charger

  • No UL 458, UL 1741 or CSA listing published; no directory record found

  Rich Solar 40A DC‑DC Charger

  • No listing for RS-DC40 in any directory; page claims CE and RoHS only
  • Claim: page lists CE and RoHS only (self-declarations)

Not scored for either

• LifespanRedodo 40A DC-DC Charger: —not scoredRich Solar 40A DC-DC Charger: —not scored
• ValueRedodo 40A DC-DC Charger: —not scoredRich Solar 40A DC-DC Charger: —not scored

• RedditRedodo 40A DC-DC Charger: 6 (higher)Rich Solar 40A DC-DC Charger: 4

  The Redodo 40A DC-DC Charger reading covers the whole brand; the Rich Solar 40A DC-DC Charger reading covers the whole brand.

  Redodo 40A DC‑DC Charger

  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)

  Rich Solar 40A DC‑DC Charger

  Read the full summary

  • Scope: few Reddit threads name Rich Solar, and those found are complaints
  • Battery: an r/SolarDIY owner's new ALPHA 5 read 6.7 V instead of 48 V, and Rich Solar's technician had not returned his call after two days (August 2023)
  • Order: an r/SolarDIY buyer waited from March for an out-of-stock ground mount, then was told its price had risen from $180 to $699 and cancelled; the refund took months (May 2025)
• GoogleRedodo 40A DC-DC Charger: 6 (higher)Rich Solar 40A DC-DC Charger: 5

  The Redodo 40A DC-DC Charger reading covers the whole brand; the Rich Solar 40A DC-DC Charger reading covers the whole brand.

  Redodo 40A DC‑DC Charger

  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)

  Rich Solar 40A DC‑DC Charger

  Read the full summary

  • Panels: DIY Solar Forum owners of Rich Solar 100 W panels reported them working as rated, one saying eight of them each pushed more than 100 W (August to September 2020)
  • Defects: an owner of 20 of the 100 W poly panels saw faint snail trails after a summer and found one with a broken diode wire (January 2021)
  • Controller: another found Rich Solar's MPPT controller OK but its setup and Bluetooth app in need of work (January 2021)
  • Warranty: a DIY Solar Forum owner reported Rich Solar cut its CIGS panel warranty from 5 years to 1 in 2021 (June 2026); an Escape Forum owner waited six weeks on a warranty claim (August 2024)
• YouTubeRedodo 40A DC-DC Charger: 7 (higher)Rich Solar 40A DC-DC Charger: 6

  The Rich Solar 40A DC-DC Charger reading covers the whole brand.

  Redodo 40A DC‑DC Charger

  Liked

  • Held 39.7 A from a simulated alternator
  • Switched between solar and alternator on its own
  • 536 W out from 565 W in on the bench

  Read the full summary

  • DIY Homestead Projects: Redodo sent the charger free; links it through Amazon affiliate links
  • Bench test: 39.7 A from a simulated alternator, 536 W out from 565 W in, and 18 A, 233 W from a 25 V solar source; called it a very cool device (December 2024, about 15,600 views)
  • Adventure Studio: states no tie; installed one in a Toyota truck camper with a 200 W panel and showed it switching from solar to alternator when the engine started (February 2024, about 7,200 views)

  Rich Solar 40A DC‑DC Charger

  Read the full summary

  • Will Prowse: in a test of several panels a Rich Solar 200 W mono gave 157 W, 78.5 percent of rating, and a 100 W poly 88 W; he kept the poly first on his list for a small panel (May 2021, about 366,000 views)
  • Disclosure: Will Prowse states every video includes paid promotion or free product and some links are affiliate links
• AmazonRedodo 40A DC-DC Charger: 6Rich Solar 40A DC-DC Charger: 8 (higher)

  The Rich Solar 40A DC-DC Charger reading covers the whole brand.

  Redodo 40A DC‑DC Charger

  Liked

  • Charges while the engine runs without straining the alternator
  • Starts on its own with the ignition on a Ford Transit
  • Simple to install

  Complaints

  • One owner could not get the solar input to charge
  • LED-only readout is sparse for the price
  • One unit failed and the owner reached no customer service

  Read the full summary

  • Listing: Redodo's Amazon US listing for the 12V 40A DC-DC (B0C4T52379)
  • Rating: 4.1 from 47 ratings (October 2026)
  • Spread: 64 percent five-star, 14 four-star, 5 three-star, 5 two-star and 12 one-star

  Rich Solar 40A DC‑DC Charger

  Read the full summary

  • Seller: Rich Solar's Amazon US listings sit in a RICH SOLAR brand store sold and shipped by SUNRICH ENERGY
  • Panels: the 100 W 12 V panel family reads 4.7 from 1,326 ratings, 84 percent five-star and 2 percent one-star; the 200 W 12 V panel 4.6 from 519; the 200 W 24 V panel 4.3 from 252 (October 2026)
  • Controller: the BRAVO 40 MPPT controller reads 3.8 from 4 ratings (October 2026)