# Wheelchair battery Long U1-34HE 12V 34Ah AGM ![Wheelchair battery Long U1-34HE 12V 34Ah AGM](https://baterias.com/1597-home_default/battery-long-u1-34he-12v-34ah.jpg) > Long U1-34HE wheelchair battery 12V 34Ah AGM. U1 Series range. Dimensions 197Γ—131Γ—180 mm. Deep-cycle and sealed, for daily wheelchair and mobility scooter use. **Category:** [Power Wheelchair Batteries](https://baterias.com/gb/batteries-for-electric-wheelchairs) β†’ [LONG](https://baterias.com/gb/long) - **Canonical URL**: https://baterias.com/gb/battery-long-u1-34he-12v-34ah - **Language**: en-GB - **Brand**: LONG - **Reference**: BCOM-LONG-U1-34HE - **MPN**: U1-34HE - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | LONG | | Reference | U1-34 HE | | Model | U1 Series | | Voltage (V) | 12 V | | Largo | 197 cm | | Ancho | 131 cm | | Alto | 180 cm | | Peso | 10.3 kg | | TecnologΓ­a | AGM | | Capacity (C20) | 34 Ah (c20) | | Capacity (C5) | 28.9 Ah (c5) | ## Quick description **Long U1-34HE 12V 34Ah** is a sealed AGM/GEL battery for daily mobility use: maintenance-free, no risk of spills, and thousands of useful cycles well beyond a starter battery. ### Why this wheelchair battery? - **Daily cycling without wear** handles deep discharges without losing capacity - **Sealed AGM/GEL** no maintenance, no risk of spills - **Thousands of useful cycles** over its full lifetime πŸ”Œ Voltage 12 V ⚑ Capacity 34 Ah C20 πŸ“ Dimensions 197Γ—131Γ—180 mm βš™οΈ Technology AGM βš–οΈ Weight 10,3 kg 🏷️ Model U1 Series ## Description ## Mobility battery Long U1-34HE U1 Series 34Ah 12V 12*V* Voltage 34*Ah* Capacity 10.30*kg* Weight The **Long U1-34HE** with AGM technology delivers **34 Ah** at **12 V** with the cycle life that power wheelchairs, mobility scooters and light electric vehicles demand. Measuring 197 Γ— 131 Γ— 180 mm, it is the direct replacement for power wheelchairs and mobility scooters fitted from the factory with a 34 Ah battery of this format. - No maintenance, no water top-ups. - Approved for air and sea transport (VRLA). - AGM: faster recharging and better cycle resistance than a conventional battery. - Sealed AGM/GEL: safe indoors and in transport. ### What the Long U1-34HE is for The Long U1-34HE is the usual replacement in power wheelchairs, mobility scooters and light electric vehicles. Recharge after each use and avoid leaving it discharged for days. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 10.30 kg. ### Dimensions, polarity and mounting It has external dimensions of 197 Γ— 131 Γ— 180 mm and weighs 10.30 kg. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### Why choose Long batteries Long batteries combine large-scale production with ISO quality standards and a batch-to-batch consistency that has made them the de-facto standard in backup systems and electric mobility. All the Long batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### The Long U1-34HE: U1 Series range and AGM technology Within the Long catalogue, the **U1 Series** series groups the references designed for this use. The U1-34HE is the 34 Ah model of that family, with the same performance as its siblings in other sizes. 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. ### How to make it last longer Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. Recharge the wheelchair or scooter after each use and do not leave it discharged for days: lead sulphates and loses capacity. ### Official warranty The Long U1-34HE 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. ### Delivery times and returns Order **before [[ks:cutoff]]** with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have **[[ks:return_days]] days** to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email. ## Frequently asked questions ### Is the U1-34HE model AGM? What does this technology offer? Yes. The U1-34HE from Long 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 do I fit the U1-34HE model in my device? 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 this page. 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 (βˆ’) 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 β€” match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (βˆ’). 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 U1-34HE model? Expected lifespan of the Long U1-34HE 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 size is this battery? Dimensions (length Γ— width Γ— height) are 197Γ—131Γ—180 mm β€” also written as 197x131x180 mm β€” 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. ### What are the equivalents of the U1-34HE model? 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 β€” 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 β€” over 25 years of experience validating automotive batteries. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-09-28*