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Solar street lights live or die on their batteries. Every all-in-one or split-type solar street lamp cycles its battery nightly — charge by day, discharge all night, 365 days a year — which makes the battery the most replaced component in the system and a steady B2B procurement category. LiFePO4 has become the standard replacement for the lead-acid and gel batteries originally fitted, and a project staple for new installations across Africa, Southeast Asia, the Middle East, and Latin America. This page maps lamp power to battery configurations, explains what street-light packs must survive, and details wholesale and OEM/ODM sourcing for contractors, distributors, and project developers.
Lamp Power → Battery Map
| Lamp power | Typical 12V LiFePO4 pack | Energy | Notes |
|---|---|---|---|
| 20–30W | 12V 20–30Ah (12.8V) | 256–384Wh | Rural roads, pathways, gardens — the highest unit volume |
| 40–60W | 12V 30–40Ah | 384–512Wh | Urban secondary roads, parking lots — the mainstream project size |
| 80–100W | 12V 60Ah+ | 768Wh+ | Main roads, compounds — often split-type with separate battery box |
All packs are 4S LiFePO4 (12.8V nominal, 14.6V charge). Sizing rule of thumb: the battery should carry the lamp through 2–3 consecutive rainy days — size for autonomy days, not just one night.
What Street-Light Packs Must Survive
1. Nightly cycling for years
A street-light battery does a full charge–discharge cycle almost every day. At 365 cycles a year, a lead-acid battery (300–500 cycles) lasts 1–2 years; a LiFePO4 pack (2,000+ cycles) lasts 5+ years. This cycle math — not the unit price — is the procurement argument for projects and the replacement argument for maintenance contractors.
2. Temperature extremes
Battery compartments on poles and in all-in-one fixtures see the full ambient range: −20°C winter nights to 60°C sun-baked enclosures. Specify the operating window explicitly (−20~60°C discharge, 0~45°C charge typical) and low-temperature charging protection for cold regions.
3. Enclosure protection
IP65 is the working standard — rain, dust, and humidity are constant. For in-fixture (all-in-one) designs the pack must also fit the fixture’s battery cavity; for split-type, pole-mount boxes need the right dimensions and cable entries.
4. Controller compatibility
Solar street-light controllers manage charging (PWM/MPPT), dusk-to-dawn switching, and dimming profiles. The battery’s BMS charge parameters must match the controller’s lithium profile — confirm charge voltage and cut-off behavior per project, especially on retrofit jobs reusing existing controllers.
5. Form factor
Two worlds: all-in-one fixtures (battery integrated into the lamp housing — size-constrained) and split-type (separate battery box on the pole — more flexible). Replacement packs must match the original cavity; new projects can standardize on one pack across the installation.
The Two Procurement Channels
- Replacement market: maintenance contractors and distributors replacing failed lead-acid/gel batteries in existing installations. They buy standard 12V 20/30/40Ah packs repeatedly — the same configurations, the same form factors, ongoing. Fast availability of the common sizes wins this channel.
- Project market: contractors, EPCs, and developers building new installations (tens to thousands of lamps). They buy on specification compliance, documentation, delivery schedule, and per-lamp TCO. Standardize the pack across the project to simplify spares.
Wholesale and OEM/ODM
LJY Energy supplies wholesale LiFePO4 batteries for solar street-light applications to contractors, distributors, and project developers — standard 12V configurations for the replacement market and coordinated OEM/ODM builds for fixture-specific packs.
What a quotation confirms, per project: capacity and energy, enclosure dimensions and IP rating, terminal/connector type, BMS protections and charge parameters, operating temperature range, cycle-life rating, applicable certifications and test summaries (UN38.3, MSDS, CE, IEC 62619), MOQ, lead time, and private-label options.
OEM/ODM coordination: for all-in-one fixtures, send the battery cavity dimensions, connector specification, and controller model — we coordinate a fixture-matched pack with our manufacturing partner. Custom housings and BMS firmware are project work, confirmed before the purchase order.
Request a solar street-light battery quotation — include lamp power, quantity, installation region, and whether this is replacement or new project. Our 12V LiFePO4 series covers standard-format requirements.
Frequently Asked Questions
Can LiFePO4 directly replace the lead-acid battery in an existing solar street light?
Usually yes at 12V — but confirm three things: the battery cavity dimensions, the controller’s charge profile (it must have or be set to a lithium profile), and the connector type. The old controller is the most common retrofit failure point.
How do I size the battery for rainy-day autonomy?
Multiply one night’s energy consumption by the required autonomy days (typically 2–3), then divide by 12.8V and the usable depth of discharge (~90% for LiFePO4). When in doubt, send us the lamp power and autonomy requirement — we size it in the quotation.
Do you support project documentation and private label?
Yes — specification sheets, test summaries, and private-label packaging for contractor and distributor programs. Terms are confirmed per project.
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