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FAQ & Support

Questions to ask before you buy

Sizing, orders, delivery and warranty — clear answers, then discuss the right equipment with Smart Tech.

01

Buying & Sizing

Start with your everyday power needs, then match the inverter, battery and panels to them.

Lower bills Backup power Solar + storage
How do I choose the right inverter?
Start with your load, the solar capacity you can install, grid reliability, whether you want batteries and whether your supply is single or three phase. Our guide How to Choose the Right Inverter explains each step. If you are unsure, request a SMART TECH assessment.
Can I start if I don’t know my electrical load?
Yes. List the appliances you want to run and how long you need backup. Choose “I’m not sure” in Find My Solution and our team will estimate the load with you.
Which battery size do I need?
Battery size depends on the power of the loads you want to back up and for how long. Compare usable kWh rather than nameplate Ah, and check compatibility with the inverter model before buying.
Can I request a custom quotation?
Yes. Use Request a Solution for residential projects or Commercial Quote for factories, commercial buildings and network sites.
02

Orders & Payment

How ordering, payment and order changes work at SMART TECH.

Do I need an account to place an order?
No. You can check out as a guest. An account lets you see your orders, save addresses and keep your wishlist in one place.
What payment methods do you accept?
Checkout shows only the methods that are enabled — currently Cash on Delivery and bank transfer. Bank transfer orders are confirmed after the payment is verified.
How can I track my order?
Use Track Order with your order number and the email or phone used at checkout, or open Orders in your account.
Can I cancel or change an order?
Contact us as soon as possible with your order number. Orders that have not been dispatched can usually be changed or cancelled.
03

Delivery & Installation

Delivery across Bangladesh and how installation projects are scoped.

Do you deliver outside my city?
Yes, we deliver across Bangladesh. Delivery charges and availability for your address are calculated at checkout, and large equipment is scheduled with you by phone.
Do you provide installation?
Installation is quoted per project. Request a quotation and we will confirm the scope — mounting, wiring, protection and commissioning — after reviewing your site.
Can I add storage to an existing solar system?
Often, yes. Share the model numbers of your inverter and panels so our engineers can check compatibility before recommending a battery.
04

Warranty & Support

Manufacturer warranty, claims and help after your system is running.

What is the warranty on products?
Warranty depends on the product and manufacturer. Only verified warranty information is shown on each product page, and warranty documents are supplied with the equipment.
How do I make a warranty claim?
Contact our support team with your order number, the product model and serial number, and a short description of the problem. We will guide you through the manufacturer’s process.
Can you help after installation?
Yes. Our technical desk helps with monitoring, settings and troubleshooting after commissioning.
05

Prepare before you contact us

Use this checklist to get ready for a productive discussion with our team.

Ready to discuss your project? Get expert guidance to design a clean, reliable and cost-effective energy system. Ask Smart Tech

Related guides

View all guides
How to Choose the Right Inverter Read guide Lithium vs Lead Acid Battery Read guide On-Grid vs Hybrid Solar Read guide