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WattCycle, a brand by Shenzhen Washi Energy Co., Ltd., sells LiFePO4 lithium batteries, solar hybrid inverters, and complete home backup systems through its US-facing webshop. The product range covers applications from RV and marine use to whole-home energy storage and off-grid solar installations.

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At a glance

About Shenzhen Washi Energy Co., Ltd.

Main category
LiFePO4 batteries and solar inverters
Target audience
RV owners, marine users, off-grid households, truck operators
Warranty
Up to 7 years depending on product
Shipping
Free shipping (US market)
Certifications
UL 1741 (ETL), ECE R10, ECE E57
Battery voltages
12V, 24V, 36V, 48V, 51.2V
Inverter output
Up to 12kW continuous, split-phase 120/240V
Country of origin
China (Shenzhen)
WattCycle positions itself in the mid-to-premium segment of the LiFePO4 battery market, targeting technically minded buyers such as RV owners, boat enthusiasts, truckers, and homeowners looking to reduce grid dependence. The shop emphasizes certifications such as UL 1741 and ECE R10, and features like active cell balancing, self-heating capability, and Bluetooth BMS monitoring are highlighted across much of the range. Products are sold with warranties of up to seven years, and the company markets direct pricing as a deliberate choice. The typical buyer is someone who values documented specifications and is willing to compare internal components rather than simply trusting a brand name.
October 2026

Active promotions

Ready to use with your order at Shenzhen Washi Energy Co., Ltd..

Free shipping on all orders within the United States, regardless of order size.
To the shop
Bundled pricing available on rack battery and 12kW inverter combinations, offering a lower total cost compared to purchasing each component separately.
To the shop
Recent

Shenzhen Washi Energy Co., Ltd. in the news

Recent updates and background about Shenzhen Washi Energy Co., Ltd., summarised in our own words.

Tech Times

WattCycle presents 10 kWh balcony solar battery at Intersolar

At the Intersolar trade fair, WattCycle introduced a new balcony solar battery unit with a capacity of 10 kWh and a power output of 5 kW, which the company positions as a record for this product category. The unit is designed for residential balcony solar setups, a growing segment in small-scale energy storage. Tech Times reported on the announcement.

South China Morning Post

South China Morning Post covers intelligent lighting trends

The South China Morning Post published a piece exploring developments in lighting technology that incorporates sensing and responsive capabilities. The topic touches on how modern lighting systems are evolving beyond basic illumination. Specific details from the coverage are limited, but the subject relates to smart lighting innovation.

Shenzhen Washi Energy Co., Ltd.

Flash Sale: WattCycle V2.5 48V 100Ah Server Rack LiFePO4 Battery

WattCycle is running a flash sale on its V2.5 48V 100Ah rack battery, which features active cell balancing, a Bluetooth BMS, an LCD display, and smart communications. The battery uses BYD cells and is positioned for home energy storage at a competitive price point.

Summaries by Image Review based on publicly available sources and our own editing. External links may contain affiliate links.

Frequently asked questions

What others ask about Shenzhen Washi Energy Co., Ltd.

Answers to the most common questions, based on search behaviour and our own research.

Is WattCycle a reliable place to buy LiFePO4 batteries?

WattCycle lists certifications including UL 1741 by ETL, ECE R10, and ECE E57 on a number of its products, and offers warranties of up to seven years on select items. These are verifiable third-party certifications, which provides a baseline level of confidence, though customer experience reports on independent platforms give a more complete picture.

Does WattCycle offer free shipping?

According to the webshop, free shipping is included on orders in the US market.

What warranty does WattCycle offer on its batteries?

Warranties vary by product. The shop advertises a 5-plus-2 year warranty on some lines and a 7-year warranty on select 12V 314Ah models. Buyers should check the specific product page for the applicable warranty terms.

Are WattCycle inverters compatible with batteries from other brands?

The 12kW All-in-One Solar Inverter is explicitly marketed as compatible with batteries from all major brands, according to the product listings on the WattCycle website.

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