Description
12V 125Ah Dual Purpose Lithium Battery — CLI125-12
The Canbat CLI125-12 is a 12V 125Ah dual-purpose lithium battery delivering 1,600Wh of usable LiFePO4 energy with 1,100A cranking capability — engineered for applications requiring both engine starting power and deep-cycle energy storage in a single battery platform. In a standard Group 27 footprint at 34.2 lbs (15.5 kg), it replaces the conventional two-battery architecture of a dedicated starting battery and a separate house battery with a single, lighter, more capable lithium unit — simplifying the electrical system, reducing installation weight, and eliminating the wiring complexity of a dual-bank setup.
Designed primarily for marine, overland, and service vehicle applications where space is constrained, weight is a performance variable, and the electrical system must reliably support both engine cranking and sustained auxiliary loads — the CLI125-12 is engineered for high-current engine starting applications with a 1,100A cranking rating, alongside 100A continuous deep-cycle discharge capability and 1,600Wh of usable energy for electronics, inverters, and accessory loads.
It ships free across Canada and the USA, carries a 10-year warranty, and is built with UL 1642 certified cells. For Canada and USA orders, there are no import duties or cross-border complications.
1,100A Cranking + 125Ah Deep Cycle — One Battery Platform
Conventional marine and vehicle electrical architectures use two separate batteries — a dedicated starting battery for engine cranking and a house battery for auxiliary loads. This approach requires additional mounting hardware, wiring, isolators or combiners, and the ongoing management of two battery systems with different charge states and service requirements. The CLI125-12 consolidates both functions into a single Group 27 battery — engine starting at 1,100A cranking, sustained deep-cycle discharge at 100A continuous, and 1,600Wh of usable energy available for electronics, lighting, pumps, inverters, and accessory loads.
The CLI125-12 is engineered for the high-current burst required for engine starting without the voltage collapse that limits lead-acid dual-purpose batteries under cranking load. LiFePO4 chemistry maintains stable voltage under high-current discharge — delivering consistent starting performance across the full state of charge range, not just at full charge as with lead-acid alternatives.
At 34.2 lbs (15.5 kg), the CLI125-12 weighs significantly less than the combined weight of the two lead-acid batteries it replaces — reducing vessel weight, improving vehicle payload, and simplifying installation in battery compartments and engine bays where space is limited.
Marine Applications
Single-Bank Marine Electrical Architecture
For fishing boats, center consoles, pontoons, and smaller powerboats where battery compartment space is limited and a separate starting and house battery setup adds unnecessary complexity and weight, the CLI125-12 provides a single-bank solution — one battery handling engine starting and house loads simultaneously. The 1,100A cranking rating is sufficient for outboard and inboard engines in the typical displacement range for these vessel classes, while 1,600Wh of usable deep-cycle energy powers fishfinders, chartplotters, VHF radio, live wells, bilge pumps, navigation lights, and onboard electronics throughout the day.
Marine Electronics & Auxiliary Loads
Stable flat discharge voltage across the full 125Ah capacity maintains consistent power quality for sensitive marine electronics — fishfinders, GPS chartplotters, radar, and VHF radios all perform more consistently from a lithium battery than from a lead-acid battery where voltage decline progressively affects equipment performance. The CLI125-12 delivers rated voltage from fully charged to nearly fully depleted, with no mid-discharge voltage sag affecting display quality or radio transmission power.
Trolling Motor Primary Bank
At 125Ah with 100A continuous discharge capability, the CLI125-12 is well suited as a primary trolling motor battery on larger fishing boats — delivering a full day of trolling at moderate speeds with stable thrust from consistent voltage output. For boats running both a trolling motor and a starting engine from a single battery system, the CLI125-12’s dual-purpose rating supports this architecture without requiring separate dedicated banks.
Overland & Vehicle Applications
Overland & Off-Road Builds
For overland vehicles, expedition builds, and off-road platforms where a single battery must handle engine starting and power an auxiliary load system — fridge, lighting, communications, winch electronics, and inverter loads — the CLI125-12 provides the cranking capability and deep-cycle capacity to support both functions in a standard Group 27 format. Weight reduction versus a comparable dual-battery lead-acid setup improves vehicle dynamics and payload capacity on demanding terrain.
Service Vehicles & Work Platforms
For service vehicles, utility trucks, and mobile work platforms requiring reliable engine starting alongside sustained auxiliary power for equipment, tools, lighting, and communications systems, the CLI125-12 delivers both in a single installation — simplifying the vehicle electrical system and reducing the maintenance overhead of managing separate starting and auxiliary battery banks.
Group 27 Dual-Purpose Lithium Battery — Marine, Overland & Starting Applications
The CLI125-12 is Canbat’s dual-purpose lithium battery in the Group 27 format — a 12V 125Ah LiFePO4 platform with 1,100A cranking capability designed for marine, overland, and vehicle applications requiring both engine starting power and deep-cycle energy storage in a single battery. For buyers sourcing a Group 27 lithium battery, a dual-purpose lithium marine battery, or a lithium starting battery for a single-bank electrical architecture, the CLI125-12 is engineered to handle both functions without compromise.
For Canadians sourcing a dual-purpose Group 27 lithium battery, the CLI125-12 ships free with no import duties, is backed by a Canadian technical team, and carries a 10-year warranty. Compatible with all major chargers, marine alternators, and solar charge controllers that support a LiFePO4 charging profile.
Runtime & Performance
The CLI125-12 delivers 1,600Wh of usable energy at 12V nominal — all accessible at 100% depth of discharge with stable voltage throughout:
| Application / Load | Average Draw | Estimated Runtime |
|---|---|---|
| Marine electronics (full suite) | ~10–15A | ~8–12 hours |
| Trolling motor — moderate speed | ~30–50A | ~2.5–4 hours |
| 12V fridge + lighting + devices | ~10–15A | ~8–12 hours |
| Inverter — 300W load | ~27A | ~4.5 hours |
| Lighting + communications + instruments | ~8–12A | ~10–15 hours |
Runtime figures are based on 100% usable depth of discharge. The CLI125-12 maintains stable voltage throughout the discharge cycle — consistent electronics performance, motor thrust, and inverter output from start to finish.
Series & Parallel Expandability
The CLI125-12 supports both series and parallel connections — up to 4 units in either configuration — for systems requiring greater capacity or higher system voltage.
| Configuration | Units | System Voltage | Total Capacity |
|---|---|---|---|
| Single unit | 1 | 12V | 125Ah / 1,600Wh |
| Parallel x2 | 2 | 12V | 250Ah / 3,200Wh |
| Parallel x4 (max) | 4 | 12V | 500Ah / 6,400Wh |
| Series x2 | 2 | 24V | 125Ah / 3,200Wh |
| Series x4 (max) | 4 | 48V | 125Ah / 6,400Wh |
The CLI125-12’s modular architecture supports the full range of 12V, 24V, and 48V system configurations for larger vessel and vehicle builds.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | CLI125-12 |
| Chemistry | Lithium Iron Phosphate (LiFePO4) — Prismatic cells |
| Nominal Voltage | 12V (12.8V nominal) |
| Capacity | 125Ah |
| Energy | 1,600Wh |
| Cycle Life | 3,000–5,000 cycles at 100% DoD |
| Cranking Amps | 1,100A |
| Max Continuous Discharge | 100A |
| Peak Discharge | 500A for 3 seconds |
| Max Charge Current | 100A (recommended 50A) |
| Charging Temperature | 0°C to 45°C (32°F to 113°F) |
| Discharge Temperature | -20°C to 60°C (-4°F to 140°F) |
| IP Rating | IP54 — splash and dust resistant |
| Weight | 34.2 lbs (15.5 kg) |
| Dimensions (L x W x H) | 319 x 165 x 234 mm / 12.55 x 6.5 x 9.2 in |
| BCI Group Size | 27 |
| Terminal Type | M8 / 1.25 — bolts included |
| Mounting | Upright or on side |
| Parallel Expansion | Up to 4 units (500Ah / 12V maximum) |
| Series Expansion | Up to 4 units (24V or 48V systems) |
| BMS Protection | Over-charge, over-discharge, short circuit, over-current, temperature extremes, cell balancing |
| Bluetooth Monitoring | Optional add-on (Canbat BT app — free for iOS and Android) |
| Storage | Store at 80–100% SoC in a cool, dry environment |
| Certification | UL 1642 certified cells |
| Warranty | 10 years |
| Shipping | Free across Canada and USA — no import duties |
Battery Management System and Bluetooth Monitoring
The CLI125-12’s integrated BMS manages cell-level protection and balancing automatically — no external battery management required.
- Over-discharge protection — prevents cell damage from excessive depth of discharge
- Over-charge protection — disconnects at the correct voltage ceiling
- Short circuit and over-current protection — responds within milliseconds
- High-temperature cutoff — protects cells during charging in hot environments
- Cell balancing — maintains consistency across the prismatic cell groups over thousands of cycles
The optional Bluetooth add-on connects the battery to the free Canbat BT app, available for iOS and Android. Monitor state of charge, voltage, current, and cell temperature in real time — useful for marine installations and vehicle builds where direct battery access requires disassembly of panels or compartment covers.
System Compatibility and Installation
The CLI125-12 is compatible with any charger, marine alternator with an external regulator, or solar charge controller that supports a LiFePO4 charging profile. When replacing a lead-acid battery, verify that the charging system’s voltage settings are configured for lithium. M8 terminals with bolts are included. The battery installs upright or on its side in any standard Group 27 tray or battery box.
For system sizing, alternator compatibility, or dual-purpose installation questions, Canbat’s Canadian technical team is available by phone, email, and live chat.
Canadian Supply, Support and Warranty
Canbat is a Canadian battery manufacturer. The CLI125-12 ships free to any address in Canada and the USA. Canadian and US buyers pay no import duties and face no cross-border complications on their orders.
The CLI125-12 is backed by a 10-year warranty and supported by a Canadian technical team available by phone, email, and live chat. Warranty claims can be submitted directly with Canbat — with no overseas support queues and no runaround.
Bruce K. –
I’ve been using the Canbat CLI125-12 lithium battery on my boat to power a trolling motor and onboard electronics — it’s been outstanding. The battery delivers consistent power all day without voltage drop, and at a fraction of the weight of lead-acid.
It’s fully sealed, vibration-resistant, and handles the marine environment perfectly. Fast charging, long runtime, and zero maintenance. If you’re serious about reliable off-shore power, this battery is worth every dollar.
Devin W. –
I’ve been using Canbat 12V lithium batteries On my boat for three years for the house battery bank, and I’ve been using AGM batteries for my starting. I was so excited once this dual purpose battery was introduced and I got a couple to replace my AGMs. They’re so light and powerful. quality lithium batteries with free shipping to Victoria From a Canadian company, What more can I ask for?