3.7V 800mAh Battery For LEXIN FT4 pro, LX-B4FM Motorcycle Intercom Bluetooth Headset, Helmet Intercom, AHB802540
3.7V 800mAh Battery For LEXIN FT4 pro, LX-B4FM Motorcycle Intercom Bluetooth Headset, Helmet Intercom, AHB802540
| Type | Li-ion Polymer battery |
| Voltage | 3.7V |
| Capacity | 800mAh |
| Dimensions | 8.0 x 25.0 x 41.0mm |
| Compatibility | LEXIN LX-B4FM, FT4 pro Motorcycle Intercom Bluetooth Headset |
Regular price
$12.99 USD
Regular price
Sale price
$12.99 USD
Taxes included.
Shipping calculated at checkout.
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Why This Battery Works
| Perfect fit | Direct-fit replacement, built to the original battery's dimensions |
| Built-in PCM protection | Guards against overcharging, over-discharging, overcurrent, and short circuits |
| Certified safe | UN 38.3, IEC 62133, UL 2054, and RoHS compliant |
| Warranty | 12-month warranty + 30-day dead-on-arrival replacement |
Is this battery compatible with my device?
Yes. This replacement battery is compatible with LEXIN LX-B4FM, FT4 pro Motorcycle Intercom Bluetooth Headset. Please confirm your original battery model matches the listing before ordering. If unsure, message us with your device model and battery part number — we'll verify within 24 hours.
How do I install this battery?
Installation requires a small screwdriver and a plastic pry tool. We recommend watching a teardown guide for your specific device before starting. If you're not comfortable with DIY repair, please seek professional service.
Does this battery come with installation tools?
No. Tools are not included. You'll need a small screwdriver and a pry tool, available at any electronics retailer or online marketplace.
Is this battery safe?
Yes. Each battery includes a built-in PCM (Protection Circuit Module) against overcharge, over-discharge, over-current, and short circuit. It is certified under UL, IEC62133, and UN38.3 standards, and passes strict QC testing on voltage, capacity, and protection.
What is the cycle life?
Typically 300–500 cycles, depending on usage and charging habits. To maximize lifespan, avoid discharging below 10% and charging above 45°C / 113°F.
My battery arrived but doesn't power on. What should I do?
First, ensure the connector is fully seated and charge the device for at least 30 minutes. If still no power, try reseating the connection. If the issue persists, contact us for troubleshooting or replacement.
What is your return/warranty policy?
We offer a 30-day DOA guarantee and a 12-month warranty from delivery date. If the battery fails to hold charge, swells, or has physical defects, contact us with your order number and description for a replacement or refund. Damage from improper installation or abuse is not covered.
What if my device model isn't listed or doesn't fit?
If your device model, voltage, or dimensions don't match our standard batteries, we can build a custom battery pack to your specs. Contact us at sales@starnovo.com with your device model, original battery photo, and requirements. Our team will provide a quote within 1–2 business days.
Do you ship internationally?
Yes, we ship worldwide. Standard delivery takes 10–20 business days depending on destination. Tracking is provided once shipped.