FAQ

SAKO is a old brand for power and solar products since 1993. SAKO 100% is factory, SAKO have several brother factories for different products:Guangdong SAKO for inverter and solar productsHangzhou SAKO for frequency invertersZhejiang SAKO for stabilizerThis website is for Guangdong SAKO, with main products covers: off grid/hybrid solar inverter, PV module, Lithium battery and storage system. We can offer one stop shopping for solar system and related products.

For off grid solar inverters, the industry standard warranty period is 1 years. SAKO can also offer extended warranty service up to 2-3 years with extra charge once requested by some special projects.

1). What can you get to be SAKO agent:More technical training, support and more free spare partsSpecial price support for SAKO agentAdvertising & publicity expenses share for SAKO brandAnnual bonus, 0.5%-2% based on their annual sales amountFast good delivery as we have regular SAKO brand products in stockCan share SAKO brand influence2). The condition to be SAKO agent:Take care of SAKO brandHave engineer team who can communicate with our engineer easilyHave their own channels to develop & win the market.Have shops or show room to display SAKO brand and productsReports on market conditionsCan fulfil SAKO appointed annual targets (For exclusive agents).You are most welcome to be SAKO agent! For more details, please feel free to contact with us right now!

If you meet any problems with SAKO product(s), please refer to the user manual to check and confirm first if your operation and setting according to instructions. If still can not solve your problem, please offer additional information below and send an email to SAKO Support Team . Please remember it is very important you supply as much relevant information as possible, including:A clear photo of the S/N label (model name + serial number)Clear description of the problemRelevant details and frequency of the problem (if applicable)Current condition of the product: can it DC start with battery? Any error code on screen?Background information (Inverter): AC source (utility or generator)? battery capacity? approx load level and type? any solar input?Background information (Solar Charger): solar panel electrical specification? PV configuration? system voltage?Supplemental photos/screenshot or videos relevant to the issueWhere the product was purchasedOnce sufficient data is gathered your case will be forwarded to our technical team for consult, and a solution will be provided to you as soon as possible. Please note our regular office hours are Mon-Fri only and general response time is within 48-72 business hours, though for more complex issues we may need more time for research and lab consult.

All SAKO original products have passed strict inspection, and are free from defects in material or workmanship for the warranty period stated in the contract. Unless otherwise specified, the standard international warranty of SAKO products are as follows:Home Inverter & Off grid/Hybrid Solar Inverter, 1 yearLithium Battery, 2/3/5 years as per proforma invoice or contract specifiedSolar Panel, 5-25 years (under STC list) as per proforma invoice or contract specifiedNormally, we will offer following easily damaged components to cover the service together with the order shipment:For Inverter, 1% PCBA board and easily damaged components like MOSFET, fuse.For Lithium battery, 1% BMS board/lithium battery/cell equalizer based on order qty.Claim procedure:Before requesting warranty service, check the operation manual to be certain that there is a problem with the product. To obtain rapid service under this warranty, please report defective devices with detail reports with information mentioned in “How to Get After-Sales Tech Support”, which is critical to a rapid disposition of your warranty claim, and we will reply within 48-72 business hours after we gathered all you information.SAKO reserves the right to provide either free repair or replacement for products covered by warranty, depending on product type. In most cases, when customer is able to provide sufficient and clear data, upon successful review and confirmation of warranty coverage, free replacement boards or parts will be supplied to customer without requiring any return. In exchange, customer will agree to a small charge to cover postage of the replacement board or parts.Please note damage due to following causes is excluded from warranty:Improper transportation and deliveryUnauthorized modifications, alterations or any form of self-repair attemptsImproper installation, usage or operation (all products are indoor rating, unless otherwise stated), including damages arising from use in environment with excessive moisture corrosion or dust build-upNon-compliance with relevant safety standards or regulationsApplication beyond the scope of product design/ratings or safety standardsActs of uncontrollable natural forces such as lighting, flood, fire, storm etcInsufficient ventilation of the device

All SAKO products passed strict testing and free from defective before shipment, including:
IQC inspection, IPQC inspection, QA inspection.
Make sure all products 100% inspected in each procedure.
That is why SAKO can last for so many years and gain good reputation in the market.

First, you should know what they are used for. If they are just use them for some basic home appliances like light, TV, fans, you can choose modified sine solar inverter. If they will be used to power some inductive load with motor, you have to choose pure sine wave solar inverter.
Second,you need know what is the total power of your loads. The rate inverter output power shoud be bigger than the load power to make sure they can works properly
Third, Your budget for this solar inverter system, There are some extra function of solar inverter for selection, such as mppt or pwm type solar charger built inside? Need parallel function or not? How many pieces solar panels you are intend to connect? Need remote WiFi or not?
For more details, can contact with our customer service.

For off grid solar inverters, the industry standard warranty period is 1 years. SAKO can also offer extended warranty service up to 2-3 years with extra charge once requested by some special projects.

Yes, SAKO SUNPOLO 5KW/6KW/8KW are real hybrid can feed to grid via setting.

Yes, parts of SAKO solar inverter optional for parallel operation up to 6-9pcs, including:
SUNSEE 5KVA, SUNPAX 5.5KW, SUNPOLO 5KW/6KW/8KW, SUNSEE AMERY 3KVA/5KVA

All SAKO pure sine wave soar inverter can work with lithium battery, and parts of SAKO solar inverter like SUNON IV series and SUNPOLO 6KW with BMS built inside, which can communicate with main brand of lithium battery such SAKO/PYLONTECH/WECO.
If the solar inverter doesn’t have BMS built inside, or the lithium battery doesn’t support the inverter communication protocol, SAKO solar inverter work can also work with lithium battery by hand setting to the battery protection voltage of sako solar inverters as follows:
If your battery voltage is 12V, Please set:
CV=14.4V
FLV=14.0V
COV=12.0V

If your battery voltage is 24V, Please set:
CV=28.8V
FLV=28.0V
COV=24.0V

If your battery voltage is 48V, Please set:
CV=57.6V
FLV=56.0V
COV=48.0V

Yes, most SAKO solar inverter with high voltage MPPT solar charger inside support battery-less work like: SUNON IV/SUNON PRO/SUNON PLUS/SUNPAX/SUNPOLO series.

If you order SAKO brand products, no special requirements to MOQ, but of course the more quantity you order, the better price you will get.
If you want to do your own brand and package design, normally the MOQ is 200-500pcs depends on model no.

Please contact with us by what’sapp 0086-13600163505 for urgent issue if I am not avialable now

It depends on which model of SAKO solar inverter you have, and what kind of solar panel do you use.

If your SAKO solar inverter with PWM solar charger inside (like SVP series):
For 12Vdc solar inverter, the mini solar panel is 1pc with VMP as 18vdc
For 24Vdc solar inverter, the mini solar panel is 2pc in series connection with each one VMP as 18vdc, or mini 1pc solar panel with vmp as 36Vdc.

if your SAKO solar inverter with low voltage (max PV input as 115vdc/145vdc) MPPT solar charger inside (like ISUN/SUNSEE series):
For 12Vdc solar inverter, the mini solar panel is 1pc with VMP as 18vdc
For 24Vdc solar inverter, the mini solar panel is 2pc in series connection with each one VMP as 18vdc, or mini 1pc solar panel with VMP as 36Vdc.
For 48Vdc solar inverter, the mini solar panel is 4pc in series connection with each one VMP as 18vdc, or mini 2pc solar panel in series connection with each VMP as 36Vdc.

if your SAKO solar inverter with high voltage (max PV input as 450vdv/500vdc) MPPT solar charger inside (like SUNON IV/SUNON PRO/SUNON PLUS/SUNPOLO series):
For 24Vdc solar inverter, the mini solar panel is 8pc in series connection with each one VMP as 30vdc, or mini solar panel is 7pc in series connection with each one VMP as 36vdc/41v.
For 48Vdc solar inverter, the mini solar panel is 8pc in series connection with each one VMP as 30vdc, or mini solar panel is 7pc in series connection with each one VMP as 36vdc/41v.

SAKO lithium battery Pack adopts top brand LiFePO4 Pack such as: BYD, CATL, BAK
Smart BMS built inside,max discharge current up to 200A
Compatible with Solar inverter perfectly
Long cycle life design, optional up to 6000 cycles, 10-15 years life design
Certificates: UN38.3, MSDS, CE,CB,IEC report

1). Size and weight:
Lithium battery with higher density, so it has smaller size and lighter weight than lead acid battery, can save shipment space and easy to operate
2). BMS and protection:
Lithium battery built inside with smart BMS provided all around protection functions, so it can protect itself properly. While lead acid battery no such function and need the protection from other extra device.
3). Life design:
Lithium battery cells cycles up to 6000 cycles, with 5 years warranty and 10 years life design. While Lead acid battery only 300-600 cycles, normally only 1-2 years warranty
4). DOD is different:
The DOD of Lithium ion battery packs can be 100%, while the recommended Lead acid battery DOD is around 50%-60%, which means the user have to keep 40%-50% inside to ensure the lead acid battery life.
5). Safety and reliability:
Lithium ion battery packs are free from harmful materials such as nickel, cobalt, or lead. The lithium battery pack is anti-explosion, so they are safe and reliable. While lead acid with lead built inside and have the possibility of explosion

Yes, SAKO lithium battery pack can compatible with most main brand of inverter on the market such as Deye, Growatt, Voltronic, GOODWE, SMA, etc. For more details, contact with SAKO customer service.

The user can select the battery type on the inverter as “USER DEFINE”, and set the battery protection voltage on the inverter as follows:
If your battery voltage is 12V, Please set:
CV=14.4V
FLV=14.0V
COV=12.0V
If your battery voltage is 24V, Please set:
CV=28.8V
FLV=28.0V
COV=24.0V
If your battery voltage is 48V, Please set:
CV=57.6V
FLV=56.0V
COV=48.0V

All SAKO lithium battery support parallel connection.
For parallel connection, SAKO 12V lithium battery support max 4pcs in series with max votlage as 48Vdc. If still any question, can contact SAKO customer service

No. When a battery is dismantled or taken apart, contact with components can be harmful and may cause personal injury and/or fire.

BMS stands for Battery Management System. It works to protect the cells from getting damaged against over or under-voltage, over-current, high temperature, or external short circuit. In addition, the BMS will shut off the battery to protect the cells from unsafe operating conditions. All SAKO batteries have a built-in BMS, that are not visible for customers most of the time to manage and safeguard battery against these types of issues.

BMS stands for Battery Management System. It works to protect the cells from getting damaged against over or under-voltage, over-current, high temperature, or external short circuit. In addition, the BMS will shut off the battery to protect the cells from unsafe operating conditions. All SAKO batteries have a built-in BMS, that are not visible for customers most of the time to manage and safeguard battery against these types of issues.

BMS stands for Battery Management System. It works to protect the cells from getting damaged against over or under-voltage, over-current, high temperature, or external short circuit. In addition, the BMS will shut off the battery to protect the cells from unsafe operating conditions. All SAKO batteries have a built-in BMS, that are not visible for customers most of the time to manage and safeguard battery against these types of issues.

No. Any combination of alkaline batteries, zinc carbon batteries, or rechargeable batteries in one device could cause damage to the device and/or leakage to the batteries.

Yes. SAKO batteries are rechargeable.

SAKO batteries are currently available to purchase on Alibaba in the US, UK, Germany, Canada, Mexico and Italy. You can visit our Alibaba stores at sakopower.en.alibaba.com, or contact SAKO customer service from www.sakopower.com

Always a pre-production sample before mass production;
Always aging with SAKO solar inverter before packing;
Always final Inspection before shipment;
Radon check by QA

For grade A quality panel, SAKO panel warranty period under STC is as follows :
25 Years output guarantee
12 Years quality assurance
5-year limited warranty of materials and workmanship.

No, SAKO solar panel is not on the tier 1 manufacturer list. Module manufacturers not present on a Tier-1 report doesn’t mean their quality inferior. Some of the most innovative or respected module manufacturers globally are not on tier 1 reports also such as Panasonic and Tesla solar panel.

SAKO’s intelligent production network can guarantee the traceability of each module, and our highly automated production lines feature end-to-end inspection and analysis processes to ensure that each module meets the highest quality standards. We select module materials according to the highest standards, with the requirement that all new materials be subject to extended qualification and reliability tests before being incorporated into our products.

SAKO Solar panels adopts top brand solar cells such as Longji, jinko, etc.

SAKO solar panel already obtains TUV/CE/CB, and can help customer apply CQC, Saber or SONCAP certificates.

Poly-crystalline silicon is old technology. The power efficiency is lower compare with mono -crystalline silicon . Normally poly panel can reach 18.8% power efficiency. Half cut mono panel can reach 22%~23%, so now more and more people focus on 500W-600W solar panel, higher efficiency, less space, and easier maintenance.

410W-550W solar panel are most popular, which are adopted latest technology half cut cell and mono perc technology. The max efficiency of 450W/550W is up to 22%, traditional panel 250W ~380W solar panel is 18-20 %. Thanks to the latest half-cut technology, the solar cell internal resistance is reduced, which provides an additional module power even in overcast light conditions, in cloudy weather, and in low light conditions.

The MOQ for SAKO solar panel is 1*40FT container. Normally 1*40HQ can load 660pcs*450W, 620pcs*550W 550W.