# Stationary UPS battery Q-battery 12LS-33 12V 35Ah AGM ![Stationary UPS battery Q-battery 12LS-33 12V 35Ah AGM](https://baterias.com/1510-home_default/battery-q-battery-12ls-33-12v-35ah.jpg) > Q-battery 12LS-33 stationary UPS battery 12V 35Ah AGM. AGM STANDARD range. Dimensions 195×130×159 mm. Long float life for UPS, alarms and standby equipment. **Category:** [Batteries for UPS / UPS](https://baterias.com/gb/batteries-for-sai-ups) → [Q-battery](https://baterias.com/gb/q-battery) - **Canonical URL**: https://baterias.com/gb/battery-q-battery-12ls-33-12v-35ah - **Language**: en-GB - **Brand**: Q-battery - **Reference**: BCOM-Q-BATTERY-12LS-33 - **MPN**: 12LS-33 - **Price**: 133,50 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | Q-Battery | | Reference | 12 LS-33 | | Model | AGM STANDARD | | Voltage (V) | 12 V | | Largo | 195 cm | | Ancho | 130 cm | | Alto | 159 cm | | Peso | 10.6 kg | | Tecnología | AGM | | Terminal type | F11 (M6) | | Capacity (C20) | 35 Ah (c20) | ## Quick description **Q-battery 12LS-33 12V 35Ah** is a stationary battery for backup power systems: UPS, alarms, telecom and emergency lighting. Long float-life under permanent charge and instant response to mains outages with no noticeable voltage drop. ## Why this stationary battery? - **Instant response** when the mains drop, no voltage dip - **Long life under 24/7 charge** optimised for permanent service - **Compatible with your system** existing UPS units and alarm control panels 🔌 Voltage 12 V ⚡ Capacity 35 Ah C20 📏 Dimensions 195×130×159 mm ⚙️ Technology AGM ⚖️ Weight 10,6 kg 🏷️ Model AGM STANDARD ## Description ## Stationary battery Q-Battery 12LS-33 35Ah 12V 12*V* Voltage 35*Ah* Capacity 10.60*kg* Weight The **Q-Battery 12LS-33** with AGM technology is a **35 Ah**, **12 V** backup battery for UPS, alarms, telecoms and emergency lighting. It measures 195 × 130 × 159 mm, the format sought by anyone replacing a 35 Ah battery in UPS, alarm and emergency systems. - Long float life under permanent charge. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. - Maintenance-free for its whole service life. - Sealed and gas-free: suitable for cabinets and offices. ### Size, terminals and hold-down of the Q-Battery 12LS-33 It has external dimensions of 195 × 130 × 159 mm and weighs 10.60 kg. It uses F11 (M6) terminals, the system that anchors and connects it in the vehicle. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change. ### What the Q-Battery 12LS-33 is for Designed for UPS, alarms, telecoms and emergency lighting, the Q-Battery 12LS-33 is sealed, gas-free and suitable for technical cabinets and offices. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 10.60 kg and F11 (M6) terminals. ### Technology inside the Q-Battery 12LS-33 Q-Battery builds the 12LS-33 to the same standards as the rest of its catalogue; what changes between references is capacity, format and terminal position. AGM (Absorbent Glass Mat) technology seals the electrolyte in glass microfibre. The result is a maintenance-free battery that is highly vibration-resistant and able to withstand deep discharges that would ruin a classic lead-acid battery. ### Why choose Q-Battery batteries Q-Battery specialises in AGM and GEL VRLA batteries for UPS, telecoms, solar and deep cycling, with long-life and tubular-plate series for industrial use. All the Q-Battery batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Manufacturer's warranty The Q-Battery 12LS-33 comes with the **manufacturer's official warranty** against manufacturing defects. If it fails through a defect within the warranty period, we replace it at no cost to you. ### How to make it last longer Replace all the batteries in the set at once and avoid environments continuously above 25 °C. Check the float voltage of the UPS or charger: a voltage that is too high shortens the life of a sealed battery. ### Shipping, delivery and returns Same-day dispatch from our warehouse for in-stock orders placed **before [[ks:cutoff]]**: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for **[[ks:return_days]] days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email. ## Frequently asked questions ### Is the Q-battery 12LS-33 an AGM battery and what are the benefits of AGM? Yes. The 12LS-33 from Q-battery uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for devices with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions. ### How is the Q-battery 12LS-33 battery installed in the vehicle? In most devices it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on our blog. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On devices with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### What is the service life of the 12LS-33 model? Expected lifespan of the Q-battery 12LS-33 is 5 to 8 years in mild-climate device use with Start-Stop. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured. ### What are the dimensions of the Q-battery 12LS-33 battery? Dimensions (length × width × height) are 195×130×159 mm — also written as 195x130x159 mm — following the European DIN standard. Always measure the space in your device before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals. ### Which batteries are equivalent to the Q-battery 12LS-33? Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop devices. See the "Equivalents" section to view recommended options at the same performance level. ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2015. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-10-15*