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ALLWEI 3000W Pure Sine Wave Inverter Review

A 3000W 12V-to-120V pure sine wave inverter with a 6000W peak surge during load start-up, listed at $199 and 9.47 lb. The page says battery connecting cables are not included and that the unit has an ETL UL458 certificate.

3.4Editorial rating: 3.4 out of 5Editorial rating · research-basedUpdated October 21, 2026
$199Price checked October 21, 2026
Check price at ALLWEI
ALLWEI 3000W Pure Sine Wave Inverter, 12V DC to 120V AC

Our verdict

A candidate for 12V battery banks that must feed loads up to 3000W, with a 6000W start-up surge stated on the page. Look elsewhere if you need cables in the box, a stated DC input current or a spec table. The main caveats are that the ETL UL458 statement comes from the page with no certificate shown and that the fan thresholds leave a gap between 1000W and 1200W.

Best for
Buyers with a 12V battery bank who want up to 3000W of AC output and will source their own battery cables.
Skip if
You want battery cables in the box, a stated DC input current, or a system voltage other than 12V.

Why 3.4/5: Lifted by a longer page that states peak surge, weight, operating range and named protections, and says plainly that cables are not included. Held back by no spec table, no DC input figures and no independent test of this model.

Check price at ALLWEIHow we research

ALLWEI's 3000W inverter converts 12V DC to 110V/120V AC and is listed at $199 as a single variant. The page states 3000W continuous with a 6000W peak surge during load start-up, maximum conversion efficiency above 91%, a weight of 9.47 lb and a 14°F-104°F operating range. It also says the battery connecting cables are not included in this model and that the unit has an ETL UL458 certificate.

Specifications

SpecPage says
Continuous output3000W
Peak surge6000W during load start-up
Max conversion efficiencyAbove 91%
Input voltage12V DC; 12 V battery banks only, per the page
AC output110V/120V AC, pure sine wave
Weight9.47 lb
Operating range14°F-104°F
Protections8-fold: low/high voltage, over/under temperature, overload, over-current, reverse polarity, short-circuit
DisplayLCD: input/output voltage, battery level, output power; readings may deviate
Fan speed thresholdsHigh at 1200W or more, or 131°F or more; low at 700W-1000W or under 131°F
Fan shut-offMay shut off at 700W or less and under 131°F
Battery cablesNot included in this 3000W model, per the page
Battery setupsPage says it supports parallel batteries and multi-battery switching
Certificate (page statement)ETL UL458

Options and pricing

The page offers a single variant at $199, in stock when it was read. A crossed-out regular price of $339 also appears; that is the store's own comparison, not a market price. The page notes that battery connecting cables are not included in this 3000W model and does not say whether the store sells them.

How it compares

Against $199 for this 3000W model, the ALLWEI 2000 Watt Pure Sine Wave Inverter is listed at $169 and the ALLWEI 1000 Watt Pure Sine Wave Inverter at $109. The ALLWEI PPS2400 Portable Power Station is a portable power station with 2048Wh and 2400W in its name, listed from $879; this inverter is described only as running from 12V battery banks.

Shipping, returns and warranty

Shipping: free ground shipping within the contiguous US, not to Alaska, Hawaii, Puerto Rico or the US Virgin Islands. Orders usually ship in 1 to 2 business days and arrive in 3 to 7 business days; the lithium batteries rule out air shipping, so the store uses ground carriers (mostly FedEx), and no signature is required on delivery. It does not ship to P.O. box, APO, FPO or DPO addresses, cannot change an address after ordering, may send a multi-item order in separate packages from different warehouses, and may hold or cancel an order its system flags as risky if the buyer does not answer its verification requests. Returns: an order can be cancelled for free before it ships, and for a full refund within 24 hours of ordering; after shipment the refund policy deducts round-trip shipping and a 2.6% fee for card payments or 3.6% for PayPal, while the shipping policy says a shipped order must be received and then returned, and the warranty page mentions an intercept fee. A 30-day return needs an unused, undamaged product in its original packaging with every accessory, proof of purchase and an RMA number from [email protected]; the buyer pays return shipping unless it is a quality issue, and the refund comes within 14 business days after inspection. A separate 90-day exchange-only policy offers a Class A replacement for the PPS300, PPS600, PPS1200, PPS2400 and B200 Pro. Warranty: the warranty page names the PPS2400, PPS1200, B200 Pro, PPS600, PPS300, XY-200, XY-100 and CH-100 and accessories bought separately, but not this product, so ask support which period applies before buying. The warranty applies to purchases through official channels with proof of purchase; unauthorized modification, bad storage, corrosion, incompatible accessories, force majeure, misuse and an expired period void it, and for repairs that need shipping the policy puts the shipping cost on the customer after the store verifies the product's condition. Payment: cards, PayPal, Apple Pay, Google Pay and Shop Pay, with Affirm or Klarna installments on items over $500.

Before you buy

The store shows a crossed-out regular price and a 'Save' amount on its product pages; these are its own comparison figures, not market prices, and some pages add promo banners (such as 'Black Friday Offer $100' or 'Apply Extra $20.00 Coupon') without saying whether the displayed price already includes them. Some pages state certifications (UL2743, UN38.3 and FCC on the PPS2400 page, ETL UL458 on the 3000W inverter page) and '200+ patents'; those are the store's own statements and we found no certificate numbers or listings. The About page says ALLWEI is a brand of ALLWEI Trading Inc., founded in 2012, with the ALLWEI brand launched in 2015; the allweipower.com domain was registered on 29 August 2024, the terms list an address in Rialto, California, and the contact page names a Hong Kong company (HK Bridna Technology Co., Limited). The pages promise support 24/7, while the policy pages give phone hours of Monday to Friday, 9 AM to 5 PM PST. Trustpilot shows one review for allweipower.com (5 stars, March 2026) on an unclaimed profile, and we found no independent lab test of any ALLWEI product.

What we liked

  • 3000W continuous with a 6000W peak surge during load start-up, and maximum conversion efficiency stated as above 91%
  • A weight of 9.47 lb and a 14°F-104°F operating range are both given
  • The protections named include over-current and reverse polarity, plus buzzer alerts
  • The page says it has an ETL UL458 certificate and supports parallel batteries and multi-battery switching
  • Priced at $199, against $169 and $109 on the 2000W and 1000W pages

Worth noting

  • Battery connecting cables are not included, and the page gives no DC input current, cable size or terminal type
  • The page limits it to 12V battery banks, so higher-voltage systems are outside what it lists
  • The fan thresholds give 1200W or more for high speed and 700W-1000W for low speed, with nothing stated between 1000W and 1200W
  • No spec table, dimensions or outlet details are given

Questions before you buy

What can the 3000W inverter output?

The page lists 3000W continuous and a 6000W peak surge during load start-up, with maximum conversion efficiency above 91%. It converts DC 12V to 110V/120V AC. The page names window air conditioners, microwaves and pool pumps as heavy loads and gives no per-appliance data.

Are battery cables included?

No. The page states that battery connecting cables are not included in this 3000W model. It gives no cable size, DC input current or terminal type.

Does the page cite a certification?

It says the inverter has an ETL UL458 certificate. No certificate document or listing number appears on the page.

Does ALLWEI ship outside the contiguous US?

The shipping policy covers free ground shipping within the contiguous US only, not Alaska, Hawaii, Puerto Rico or the US Virgin Islands. It ships by ground because of the lithium batteries, usually in 1 to 2 business days, with delivery in 3 to 7 business days.

What is the return window?

The return policy gives 30 days from receipt for an unused, undamaged product in its original packaging, with proof of purchase and an RMA number from [email protected]. The buyer pays return shipping unless it is a quality issue, and the refund follows within 14 business days after inspection.

Can I pay in installments?

The payment page lists Affirm and Klarna installments for products priced above $500; eligible customers click Prequalify now on the product page. Other options are cards, PayPal, Apple Pay, Google Pay and Shop Pay.

How long is the warranty?

The warranty page does not name this product, so ask support which period applies before buying.

Sources & verification

What this review is based on and the day we last read it. Specs and claims from the maker are the maker’s own; the verdict and the rating are ours.

From the store

  • ALLWEI 3000W Pure Sine Wave Inverter, 12V DC to 120V AC product page: specs, options and priceSpecs, options and the listed priceRead October 21, 2026
  • ALLWEI shipping policyFree ground shipping in the contiguous US, 1-2 days to ship, 3-7 to arrive, no air shipping, risk-order checksRead October 21, 2026
  • ALLWEI return and refund policy30-day returns with an RMA, cancellation fees after shipment, 90-day exchange-only policyRead October 21, 2026
  • ALLWEI warranty policy3+3, 2+1 and 1-year tiers by model, registration for the extra years, exclusionsRead October 21, 2026
  • ALLWEI payment policyCards, PayPal, Apple Pay, Google Pay, Shop Pay; Affirm and Klarna above $500Read October 21, 2026
  • ALLWEI About pageALLWEI Trading Inc., founded 2012, ALLWEI brand launched 2015Read October 21, 2026
  • ALLWEI contact pageSupport and sales emails; company listed as HK Bridna Technology Co., LimitedRead October 21, 2026
  • ALLWEI terms of serviceOperated by ALLWEI and ALLWEI Trading Inc.; phone and Rialto, California address; California lawRead October 21, 2026

Independent

What we couldn’t verify

  • The page says the inverter has an ETL UL458 certificate; no certificate or listing number was found. Maximum conversion efficiency is given as above 91% with no test conditions, and the LCD note says readings may deviate.
  • The fan FAQ gives high speed at 1200W or more and low speed at 700W-1000W, leaving 1000W-1200W undescribed. The 131°F threshold is not tied to ambient or internal temperature.
  • No spec table, DC input current, cable size, terminal type or dimensions are given. One bullet says it 'directly powers light loads (small appliances)' while another names window air conditioners, microwaves and pool pumps; the page does not reconcile the two.
  • The pages promise support 24/7, while the policy pages give phone hours of Monday to Friday, 9 AM to 5 PM PST.
  • The warranty table labels the extra warranty period 'Paid' while the text describes an extension after registration.
  • No independent lab test of any ALLWEI product was found; Trustpilot shows one review on an unclaimed profile.

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