Car battery finder Bmw I3 (i01) Range Extender (125 Kw / 170 Cv) 2018

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How to change the battery of a Bmw I3 Range Extender

Generic guide to safely replace the battery of a Bmw I3 Range Extender. Estimated time: 15-30 minutes. Typical tools: socket or open-end wrenches (usually 10-13 mm), sometimes Allen or Torx keys depending on the model. This vehicle uses a conventional flooded battery: no BMS registration is required, the alternator will charge it directly.

1. 1
   Prepare the vehicle Park on a flat surface, switch off the engine, remove the key (or disarm keyless systems) and make sure all lights and electrical accessories are off.
2. 2
   Locate the battery Open the hood and find the battery. It is usually in the engine bay, but on many modern cars it may be in the trunk, under the passenger seat or under a floor cover. Check the manual if you cannot find it.
3. 3
   Identify terminals and hold-down Find the positive terminal (marked «+», red cable, usually with a cover) and the negative (marked «−», black cable). Inspect how the battery is secured: the hold-down can be a lower clamp with a bolt, a threaded rod, a top bracket or a metal frame. Depending on the model you will need 10-13 mm sockets, open-end wrenches, Allen keys or Torx keys.
4. 4
   Disconnect the negative terminal first Using the right tool, loosen the negative terminal nut until you can lift the clamp off the post. Move the cable aside and secure it so it cannot touch the battery while you work. This order prevents short circuits.
5. 5
   Disconnect the positive terminal Remove the protective cover and loosen the positive clamp the same way. Move the cable aside, keeping it away from any metal part of the vehicle.
6. 6
   Remove the hold-down and lift the battery out Undo the bolts, clamps or rods securing the battery. Lift it straight up, keeping it vertical at all times. Batteries are heavy and contain acid: wear gloves and, if possible, use a proper carrying strap.
7. 7
   Install the new battery Clean the tray and terminals with a brush if you see corrosion. Place the new battery in the same orientation (positive and negative on the same side as the old one). Fit the hold-down and tighten firmly, without overtightening.
8. 8
   Connect terminals in the correct order Connect the positive terminal first and tighten the clamp. Then the negative. This order prevents sparks and shorts. Apply anti-corrosion grease on the posts if you have some. Replace the positive terminal cover.
9. 9
   Verify and, if required, register the battery Start the vehicle and check that everything works. On cars with a battery management system (BMS) it is strongly advised to register the new battery with an OBD scanner; otherwise the alternator may not charge it correctly. Re-initialise basic settings (clock, radio, windows) if the vehicle prompts you to.

General reference guide: always consult your vehicle manufacturer's manual before following these steps, as procedures may vary or not be suitable depending on model, year and equipment. If in doubt, consult a professional. baterias.com accepts no liability for damage resulting from an incorrect procedure.

How to jump-start a Bmw I3 Range Extender with cables

Step-by-step guide to jump-starting the Bmw I3 Range Extender using a donor car when the battery is flat. Estimated time: 10-15 minutes. Required: a set of insulated jumper cables with adequate gauge (at least 16 mm²) and a donor vehicle with a charged battery of the same or similar voltage. This vehicle uses a conventional flooded battery: no BMS registration is required, the alternator will charge it directly.

1. 1
   Prepare both cars Pull the donor car close to your Bmw I3 Range Extender but make sure they don't touch. Switch both engines off, apply handbrakes, remove keys, and turn off lights, radio, HVAC and all electrical accessories. No one should be smoking nearby.
2. 2
   Inspect the flat battery If the battery has cracks, bulges, acid leaks or is frozen (after a hard freeze), DO NOT jump-start it — it could explode. Call a professional or replace it outright.
3. 3
   Connect the red (positive) clamp One end of the red clamp to the positive terminal (+) of the flat battery in the Bmw I3 Range Extender. The other end to the positive (+) of the donor battery. Make sure the clamps don't touch any other metal part.
4. 4
   Connect the black (negative) clamp carefully One end to the negative terminal (−) of the donor battery. The OTHER end NOT to the Bmw I3 Range Extender's negative: connect it to a bare metal part of the engine (a cylinder-head bolt, the alternator bracket, the engine block). This final step avoids sparks near the battery, which can release hydrogen and explode.
5. 5
   Start the donor then the Bmw I3 Range Extender Start the donor car and let it idle for 2-3 minutes. Then try to start the Bmw I3 Range Extender. If it doesn't fire, wait 10 seconds and retry. Never hold the starter for more than 5 seconds at a time — it overheats.
6. 6
   Disconnect in reverse order and charge With the Bmw I3 Range Extender running, first remove the black clamp from the Bmw I3 Range Extender's engine, then from the donor negative. Then the red clamp from the donor positive and finally from the Bmw I3 Range Extender positive. Keep the Bmw I3 Range Extender running for at least 15-20 minutes (ideally half an hour on the road) so the alternator can recharge the battery.

General reference guide: always consult your vehicle manufacturer's manual before following these steps, as procedures may vary or not be suitable depending on model, year and equipment. If in doubt, consult a professional. baterias.com accepts no liability for damage resulting from an incorrect procedure.

Battery care and maintenance for the Bmw I3 Range Extender

Six simple routines that extend the life of the Bmw I3 Range Extender's battery from 3 to 5+ years. Doable in 15 minutes with a basic multimeter and a brush. This vehicle uses a conventional flooded battery: no BMS registration is required, the alternator will charge it directly.

1. 1
   Check the voltage every 6 months With a multimeter on DC voltage and the Bmw I3 Range Extender at rest (engine off for at least 2 hours), the terminals should read 12.6-12.8 V. Below 12.4 V it is partially discharged and needs charging or replacement. Engine running, a healthy reading is 13.8-14.7 V (alternator charging).
2. 2
   Clean the terminals if sulphated If you see white-greenish powder on the terminals, first disconnect negative, then positive (always in that order). Brush the terminals with a wire brush and neutralise the acid with a mix of 1 tablespoon of baking soda in a glass of water. Dry well and apply anti-corrosion grease or petroleum jelly before reconnecting (positive first, negative second).
3. 3
   Verify the hold-down A loose battery vibrates with every bump and can lose up to half its service life. Check every 6 months that the clamp, rod or bracket is tight. Don't overtighten — plastic cases can crack — but keep it firm.
4. 4
   Avoid deep discharges A deep discharge (below 10.5 V) can cut battery life by 50%. Don't leave lights, radio, HVAC or USB chargers on with the engine off. If the Bmw I3 Range Extender will sit unused for more than 2 weeks, connect an intelligent maintenance charger.
5. 5
   Verify the alternator A faulty alternator kills healthy batteries. With the engine running and the multimeter on the terminals, voltage should be 13.8-14.7 V. Above 14.8 V overcharges (boils the electrolyte); below 13.5 V undercharges. In either case, have the alternator diagnosed at a workshop.
6. 6
   Maintenance charger for long parking If the Bmw I3 Range Extender sits parked for more than 2 weeks, connect an intelligent maintenance charger that supplies just enough current to compensate for parasitic drain (alarm, ECU, clock…). A smart 2-5 A charger costs 30-60 € / $40-80 and pays for itself by saving one battery.

General reference guide: always consult your vehicle manufacturer's manual before following these steps, as procedures may vary or not be suitable depending on model, year and equipment. If in doubt, consult a professional. baterias.com accepts no liability for damage resulting from an incorrect procedure.

How to identify the battery polarity of the Bmw I3 Range Extender

Knowing your battery polarity (positive on the right or on the left) is the most important step before buying a replacement: connecting it the wrong way can damage the electronics. Estimated time: 2 minutes. Tools: eyes only — no tools required. This vehicle uses a conventional flooded battery: no BMS registration is required, the alternator will charge it directly.

1. 1
   Locate the battery Open the bonnet of the Bmw I3 Range Extender and find the battery. It is usually a rectangular block with two metal terminals (large screw heads) on top — one red or "+" and one black or "−".
2. 2
   Identify the positive terminal The positive terminal (+) typically has a red cap, red sticker or cover, a raised "+" symbol on the casing, and/or a slightly larger diameter (19 mm vs 17 mm of the negative, in standard European batteries).
3. 3
   Face the battery Look at the battery from the label side with the terminals near you — the edge with the terminals should face you, not the back.
4. 4
   Determine polarity If the positive pole is on the RIGHT → polarity 0 (positive right). If it is on the LEFT → polarity 1 (positive left). On batteries with side terminals, the convention changes: polarity 4 (narrow-side right) and polarity 3 (narrow-side left).
5. 5
   Note the reference The label on top shows the reference (e.g. "A9", "TK960", "EA900"). Search for the exact model with that reference and the identified polarity — never change polarity without consulting the vehicle manufacturer.

General reference guide: always consult your vehicle manufacturer's manual before following these steps, as procedures may vary or not be suitable depending on model, year and equipment. If in doubt, consult a professional. baterias.com accepts no liability for damage resulting from an incorrect procedure.