Manufacturer-approvedBatteries & storageBLUETTI
B300K Expansion Battery
BLUETTI B300K is a 2,764.8Wh automotive-grade LiFePO4 expansion battery designed for several current BLUETTI power-station platforms.
Parts & compatibility
Start with the exact product before choosing a component.
Use model numbers, voltage/current limits, connectors, communications and manufacturer documentation to narrow compatible parts. Use the documented compatibility evidence shown with a part before buying it for a specific system.
Compatibility first
Model number, voltage/current, connector, firmware and communications matter more than appearance.
Compatibility by component family
Start with the component family, then verify the exact product pairing.
Use each family as a route into model-specific compatibility evidence. Empty or uncertain pairings are not padded with unrelated products.
Compatibility options
Monitoring & communications
Meters, CTs, shunts, gateways, dongles, CAN and RS485 equipment.
Check compatibility →Compatibility options
Charge & control
MPPT controllers, system controllers and energy-management hardware.
Check compatibility →Compatibility options
Expansion & backup
Expansion batteries, transfer equipment and critical-load hardware.
Check compatibility →Search parts & controls
Search by part, brand or component type.
Filter by brand and type, then check the compatibility basis on each result before buying. If evidence is missing, Melnti does not substitute an unrelated product.
Parts and accessories matching your filters. Check the compatibility basis on each result.
Manufacturer-approvedBatteries & storageBLUETTI
B500K Expansion Battery
BLUETTI B500K is a 5,120Wh LiFePO4 expansion battery for current BLUETTI home-backup and portable-power platforms, with more than 4,000 rated cycles.
Manufacturer-approvedCharge controllersBLUETTI
SolarX 4K Solar Charge Controller + P090D Adapter Cable
BLUETTI SolarX 4K is a 4,000W MPPT solar charge controller that accepts 150–500V PV input and steps it down below 60V for compatible BLUETTI systems.
Local help
Need a component installed, sourced or checked near you?
Search the installer directory by city or town. Melnti shows direct service-area evidence first, then wider regional/country options without presenting them as locally based.
Compatibility labels
“Looks compatible” is not a compatibility standard.
- OEM / original when the manufacturer documents the part
- Manufacturer-approved when an official compatibility source exists
- Documented compatible when reliable technical documentation supports the pairing
- Universal only for genuinely standardized components within their ratings
Find the component, not just the category
Solar systems depend on more than panels, batteries and inverters. Melnti groups source-backed expansion batteries, charge controllers, optimizers, microinverters, monitoring hardware, meters, communications equipment, backup accessories and related components so people can search by brand and equipment family.
Compatibility comes before appearance
Two connectors or accessories can look similar and still be electrically or digitally incompatible. Melnti treats OEM, manufacturer-approved, documented-compatible and generic/universal components as different evidence levels. Confirm model numbers, voltage/current limits, communications, firmware and regional documentation before installation.