# TechFeed Labs > EV battery diagnostics, pack repair, and rechargeable lighting in Chittagong. ## Posts - [Choosing a Refurbished-Cell Fan-Light for Home](https://battery.techfeedlabs.com/choosing-a-refurbished-cell-fan-light-for-home/): For a room that needs both airflow and light during an outage, the useful questions are practical: how long it runs, how it charges, and what the warranty covers. - [What a Battery Repair Estimate Should Explain](https://battery.techfeedlabs.com/what-a-battery-repair-estimate-should-explain/): A repair price is easier to judge when you know what work it includes. Before approving a battery job, get clear answers about the diagnosis, parts, and any warranty terms. - [Before Replacing an Easy-Bike Battery, Check This](https://battery.techfeedlabs.com/before-replacing-an-easy-bike-battery-check-this/): A slow start or shorter route can point to more than one battery problem. A few details about the pack and its symptoms help make a useful diagnosis before you decide to replace it. ## Pages - [My Account](https://battery.techfeedlabs.com/my-account-2/) - [Checkout](https://battery.techfeedlabs.com/checkout-2/) - [Cart](https://battery.techfeedlabs.com/cart-2/) - [Contact](https://battery.techfeedlabs.com/contact/) - [Blog](https://battery.techfeedlabs.com/blog/) - [About Us](https://battery.techfeedlabs.com/about/) - [Book Appointment](https://battery.techfeedlabs.com/booking/) - [Services](https://battery.techfeedlabs.com/services/) - [Home](https://battery.techfeedlabs.com/) - [My account](https://battery.techfeedlabs.com/my-account/) - [Checkout](https://battery.techfeedlabs.com/checkout/) - [Cart](https://battery.techfeedlabs.com/cart/) - [Shop](https://battery.techfeedlabs.com/shop/) ## Products - [Battery Recycling Intake](https://battery.techfeedlabs.com/product/battery-recycling-intake/): Book a safe drop-off and condition check for an end-of-life battery intended for recycling. The listed fee covers workshop intake and sorting; any pickup or special handling costs are confirmed with you before arrangements are made. - [Fleet Battery Inspection](https://battery.techfeedlabs.com/product/fleet-battery-inspection/): Book a workshop inspection for multiple fleet batteries used in easy-bikes or auto-rickshaws. The technician records the condition of each battery and flags units for balancing, repair, or replacement so fleet owners can plan work and costs. - [Battery Pack Refurbishment](https://battery.techfeedlabs.com/product/battery-pack-refurbishment/): Book a full inspection and refurbishment assessment for a tired but potentially repairable battery pack. The technician checks cells, connections, and pack condition, then shares a repair plan and itemized estimate before any refurbishment begins. - [Lithium Cell Replacement](https://battery.techfeedlabs.com/product/lithium-cell-replacement/): Book assessment and replacement of failed lithium cells in a repairable battery pack for an easy-bike or backup system. The listed price is starting labor; compatible cell costs are checked and approved with you before installation. - [BMS Fault Diagnosis](https://battery.techfeedlabs.com/product/bms-fault-diagnosis/): Book diagnosis of a battery management system that is cutting out, charging unevenly, or showing a fault. The technician will test the BMS and related connections, then confirm the repair scope and parts cost before starting paid repair work. - [Lead-Acid Battery Service](https://battery.techfeedlabs.com/product/lead-acid-battery-service/): Book an inspection and repair assessment for a lead-acid battery used in an easy-bike, auto-rickshaw, IPS, or solar setup. The appointment includes terminal and voltage checks, with repair options and any parts cost explained before work begins. - [LFP Pack Balancing](https://battery.techfeedlabs.com/product/lfp-pack-balancing/): Book cell-level voltage checks and balancing for a lithium iron phosphate battery pack used in an electric vehicle or backup system. The technician will review pack condition first and explain any additional work before proceeding. - [Battery Health Check](https://battery.techfeedlabs.com/product/battery-health-check-2/): Book a 30-minute battery assessment with IR and voltage checks for an e-bike, auto-rickshaw, IPS, or solar battery. You’ll get a plain-language condition summary before deciding whether repair is worthwhile. - [Battery Recycling Pickup](https://battery.techfeedlabs.com/product/battery-recycling-pickup/): A local collection service for spent lead-acid and lithium batteries, routed for responsible handling instead of ordinary disposal. Request pickup to clear unusable batteries from your home, fleet, or workshop and support safer recycling. - [Solar Backup Light](https://battery.techfeedlabs.com/product/solar-backup-light/): A rechargeable LED light kit with a separate solar panel for everyday backup lighting at home or in a small shop. The panel and lamp are supplied together so the light can be charged from sunlight when grid power is unavailable. - [12V Fan-Light Combo](https://battery.techfeedlabs.com/product/12v-fan-light-combo/): A rechargeable 12V fan and LED light combination for household backup use during power cuts. The integrated battery, fan guard, and front light make it a practical single unit for rooms, stalls, and small workspaces. - [Mini 18650 Fan](https://battery.techfeedlabs.com/product/mini-18650-fan/): A rechargeable tabletop mini fan assembled with refurbished 18650 lithium cells and a compact charging circuit. Its small footprint suits a bedside table, desk, or shop counter where portable airflow is useful. - [BMS Repair Service](https://battery.techfeedlabs.com/product/bms-repair-service/): Board-level inspection and repair for compatible lithium battery management systems, including checks of wiring, protection components, and balance connections. A practical option when the pack is not charging or is cutting out unexpectedly. - [Lithium Pack Refurbish](https://battery.techfeedlabs.com/product/lithium-pack-refurbish/): A lithium-ion LFP battery pack refurbishment service for compatible EV and backup-power systems, with cell condition checks and balancing as needed. Choose it to restore usable capacity while keeping serviceable parts in use. - [Lead-Acid Battery Repair](https://battery.techfeedlabs.com/product/lead-acid-battery-repair/): A repair service for lead-acid batteries used in easy-bikes, auto-rickshaws, IPS systems, and solar setups. The technician checks the battery and replaces only repairable components, helping you avoid the cost of buying a new unit when practical. - [Battery Health Check](https://battery.techfeedlabs.com/product/battery-health-check/): A workshop diagnostic for 12V–72V lead-acid and lithium battery packs, including voltage readings and a clear repair estimate. Book it to find out whether your battery needs a small fix or a larger rebuild before replacing it. [comment]: # (Generated by Hostinger Tools Plugin)