12V 9Ah LiFePO4 Battery (SLA Replacement)
Product Overview
A compact LiFePO4 battery (12V class, 12.8V nominal, 9Ah, about 115Wh) for the same sealed lead-acid replacement market as the 7Ah format — alarm panels, access control, small UPS, ride-on toys, sprayers and portable electronics that need a little more runtime than 7Ah.
It sits between our 12V 7Ah and 12V 20Ah. Many devices that accept a 7Ah SLA also accept a 9Ah lithium pack of the same case family; compartment clearance and terminal type still need checking.
WhatsApp: +1 404 784 1946 (backup: +86 159 8945 0735)
Specifications
Status key: [Industry reference] = the base definition of this model class or an arithmetic value, not an LJY test result. [Optional configuration] = available by OEM/ODM project. [Confirmed per project] = fixed only in the datasheet issued with your quotation (cell option, BMS rating, dimensions, weight, terminals, documents). We do not publish unverified values — request the datasheet.
| Group | Parameter | Value | Status |
|---|---|---|---|
| Cell & chemistry | Battery chemistry | LiFePO4 (lithium iron phosphate) | [Industry reference] |
| Electrical | Nominal voltage | 12V class — 12.8V (4S) | [Industry reference] |
| Electrical | Rated capacity | 9Ah | [Industry reference] |
| Electrical | Energy | approx. 115Wh | [Industry reference] |
| Electrical | Charge voltage (bulk/absorption) | 14.2–14.6V (no float required) | [Industry reference] |
| Electrical | Discharge cut-off voltage | Confirmed per project (datasheet issued with quotation) | [Confirmed per project] |
| Electrical | Continuous discharge current | Confirmed per project (datasheet issued with quotation) | [Confirmed per project] |
| Cell & chemistry | Cell type | Confirmed per project (datasheet issued with quotation) | [Confirmed per project] |
| Mechanical | Dimensions (L×W×H) | Confirmed per project (datasheet issued with quotation) | [Confirmed per project] |
| Mechanical | Weight | Confirmed per project (datasheet issued with quotation) | [Confirmed per project] |
| Mechanical | Terminals | Confirmed per project (datasheet issued with quotation) | [Confirmed per project] |
| BMS & protection | Built-in BMS | Over-charge / over-discharge / over-current / short-circuit / temperature protection, balancing | [Industry reference] |
| Optional configuration | Bluetooth app monitoring | Cell voltages, SOC, temperature | [Optional configuration] |
| Optional configuration | Low-temperature protection / self-heating | Charge cut-off below 0°C; heating version | [Optional configuration] |
| Optional configuration | Higher-current BMS | See BMS sizing guide below | [Optional configuration] |
| Optional configuration | Enclosure / branding | Custom case color, logo, labels, packaging | [Optional configuration] |
| Optional configuration | Series / parallel expansion | Max series/parallel count confirmed per BMS | [Optional configuration] |
| Optional configuration | 7Ah / 10Ah / 12Ah variants in the same case family | Capacity ladder for the same compartment | [Optional configuration] |
| Optional configuration | Lead wire / connector | For OEM devices instead of spade terminals | [Optional configuration] |
| Commercial & documents | Certifications / test documents | Per order and target market | [Confirmed per project] |
| Commercial & documents | Warranty terms | Per order agreement | [Confirmed per project] |
| Commercial & documents | Lead time | Per order quantity and configuration | [Confirmed per project] |
| Commercial & documents | Pricing | Quoted per inquiry | [Confirmed per project] |
BMS, Communication & Protection
Every pack uses a built-in battery management system with over-charge, over-discharge, over-current, short-circuit and temperature protection plus cell balancing. The BMS current rating sets what the battery can actually deliver, so it should be chosen from the load — not from the capacity. The guide below is general engineering guidance; the BMS rating offered for your order is confirmed in the quotation.
BMS sizing guide
| Load / use case | Suggested BMS rating |
|---|---|
| Alarm panels, access control, standby (under ~2A) | 7–10A BMS |
| Small UPS, toys, sprayers (up to ~9A, short surges) | 10A BMS |
| Higher continuous load | Use 12V 20Ah or larger |
Real capacity depends on the cell configuration chosen for the order; we state it in the quotation datasheet. Charging: use a LiFePO4 profile (14.2–14.6V absorption, equalization off). See the charging voltage chart.
Size & Fitment
Common 12V 7–9Ah SLA cases are used for this size. Send the device compartment size and terminal width (F1 or F2) and we specify the enclosure to match. Final dimensions and terminal layout are confirmed per project in the datasheet issued with your quotation.
Check that the device does not hold a lead-acid float voltage for long periods; LiFePO4 prefers a lithium charge profile.
Applications
- Alarm panels, fire and security systems, access control
- Small UPS and network backup
- Kids ride-on toys
- Agricultural backpack sprayers
- Fish finders and portable electronics
- Emergency and solar garden lighting
Application limits
- Not for engine starting.
- Some UPS chargers float at lead-acid voltages continuously — confirm compatibility before mass replacement.
- Standard version should not be charged below 0°C without low-temperature protection.
See also: Marine Battery Solutions · Product catalog.
OEM / ODM Options
- Branding: case color, logo printing, labels, user manual and retail packaging.
- Electrical: capacity variant, BMS continuous/peak current, charge limits.
- Monitoring & communication: Bluetooth app, SOC display, RS485 / CAN where the system needs it.
- Environment: low-temperature charge protection or self-heating.
- Mechanical: enclosure size, terminals, handles, mounting and connector type.
How we help new battery brands configure this model
- 1. Define the use case: application, largest load / inverter or controller, charging sources and climate.
- 2. Pick the configuration: we map that to cell option, BMS rating, monitoring and enclosure, and flag trade-offs.
- 3. Sample stage: evaluate samples against your own tests and documentation needs.
- 4. Pilot order: confirm labeling, packaging and document package.
- 5. Repeat supply: lock the specification so reorders stay consistent.
Wholesale & Supply Chain
LJY Energy is a China-based LiFePO4 battery supplier and OEM/ODM solutions provider offering customization, project-confirmed specifications and export supply coordination. We support configuration, project-confirmed inspection and documentation arrangements, and export logistics for importers, distributors, brands and installers. Lithium batteries ship as dangerous goods (UN3480, Class 9); the document package for your order is confirmed per inquiry. See the product catalog, our sample order guide and the wholesale & distributor program.
What to include in your inquiry
- Device type/model and charger specification
- Terminal type (F1/F2) and orientation
- Load current and standby time needed
- Target market (for documents/labels), estimated quantity and branding needs
WhatsApp: +1 404 784 1946 (backup: +86 159 8945 0735)
OEM / Private-Label Options
For private-label brands and distributors, this 12.8V (12V class) model can be adapted to your market. Appearance, color and logo customizable per customer request; electrical options are confirmed in the project specification.
| Option | What can be configured | Status |
|---|---|---|
| Appearance & colour | Case colour, finish, front panel layout | Configurable per project |
| Logo, labels & packaging | Your logo, rating labels, carton print, manuals, retail box | Configurable per project |
| Enclosure / size fit | Small SLA-replacement formats (e.g. common 7–12Ah AGM case sizes) | To be confirmed per project |
| BMS communication (optional) | Bluetooth app, RS485 or CAN where the application needs it | Optional configuration — confirmed per project |
| Self-heating | Low-temperature charge heating for cold climates | Available on request, to be confirmed per project |
| Terminals | M6/M8 stud or other terminal type for the application | To be confirmed per project |
RFQ fields — send these with your inquiry
- Application (RV, marine, solar, mobility, backup, etc.)
- Voltage / Ah required (and series/parallel plan)
- Inverter or charger model and firmware version
- Climate (lowest charge temperature, highest ambient)
- Estimated annual volume
- Logo / appearance / packaging needs
- Target market (for documentation scope)
Send your RFQ for LJY-12V9-STD · WhatsApp: +1 404 784 1946 (backup: +86 159 8945 0735)
Other capacities in this 12V series
Same OEM/ODM platform, different capacity: 7Ah · 12Ah · 20Ah · 50Ah · 100Ah · 135Ah · 150Ah · 200Ah · 230Ah · 300Ah · 400Ah · 460Ah · 200Ah self-heating. Full ladder with energy values and scenarios: 12V 150Ah series section.
Compare with neighbouring capacities
12V-class models on this site next to this one. Nominal energy is nominal voltage × rated capacity (12.8V × Ah): an arithmetic reference, not a measured value. Usable energy depends on depth of discharge, BMS settings and temperature. Reference values reviewed 2026-10-15; final values are confirmed in the datasheet issued with your quotation.
| Model | Nominal energy (V × Ah) | Energy vs this model | Typical use class (industry reference) |
|---|---|---|---|
| 12V 7Ah | 89.6Wh (12.8V × 7Ah) | -26Wh (-22%) | Alarm, UPS, small SLA replacement |
| 12V 9Ah (this page) | 115.2Wh (12.8V × 9Ah) | This model | Alarm, UPS, small SLA replacement |
| 12V 12Ah | 153.6Wh (12.8V × 12Ah) | +38Wh (+33%) | Small SLA replacement, signs, tools |
| 12V 20Ah | 256Wh (12.8V × 20Ah) | +141Wh (+122%) | Small mobility, fish finders, light solar |
Related Products
- 12V 7Ah LiFePO4 Battery (SLA Replacement)
- 12V 20Ah LiFePO4 Battery
- 12V 50Ah LiFePO4 Battery
- 12V LiFePO4 Battery Series overview
- Product catalog
Frequently Asked Questions
Can it replace a lead-acid battery directly?
Usually, after checking charger profile, terminal type/orientation and compartment dimensions. See our LiFePO4 vs lead-acid guide.
Are the specifications on this page fixed?
No. Values marked [Confirmed per project] are fixed only in the datasheet issued with your quotation.
Can you supply it under my own brand?
Yes — case color, logo, labels, manual and packaging are standard OEM options; electrical and monitoring changes are handled as ODM configuration.
Why 9Ah instead of 7Ah?
About 30% more energy in the same case family for devices that need longer standby or runtime. Clearance and charger behaviour still need checking.
Will it work in my alarm panel or UPS?
In many cases yes, but alarm and UPS chargers are designed for lead-acid float charging. Tell us the panel/UPS model so we can confirm charger compatibility before a volume order.
How is MOQ set?
MOQ is confirmed per project stage — sample, pilot and production — and depends on cells, tooling and branding scope. Logo-only changes usually differ from new-tooling projects.
Which certificates apply to this model?
Certificate scope is confirmed per model and per order (e.g. shipping documents such as UN38.3 / MSDS). Custom changes can affect scope, so we confirm it before quotation.
Can I get cell traceability documents?
Cell traceability documents (cell brand/model, batch information, codes where available) are provided on request and confirmed per project.
Is self-heating standard?
No. Self-heating is available on request and is to be confirmed per project.
Values marked [Confirmed per project] are fixed in the order specification. Product images are illustrative renders, not photographs of production units. Content as of October 2026.