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Autopapyrus · Changan UNI-V 2.0 Turbo (2025)
https://autopapyrus.com/guides/changan/uni-v/battery-replacement/
Compiled automatically from service literature and owner experience. Specs are for the typical configuration — check them against your exact car before you start.

Changan UNI-V 2.0 Turbo (2025): Battery Replacement

Replacing the 12 V battery on a UNI-V with the 2.0 Turbo engine is done the usual way: disconnect the terminals, remove the hold-down bracket, swap the battery, and reconnect the terminals in reverse order. The exact procedure for this model is not documented in public service materials, so the steps are described using the general principle. If a battery monitoring sensor is installed on the negative terminal, do not disconnect it from the cable and do not swap the terminals.

Difficulty: Easy Time: 20-30 minutes Steps: 14

Part

№PartAlternatives
01 12 V starter battery, standard polarity, EFB or AGM for start-stop systemscapacity and cold cranking current no lower than original; same size and mounting dimensions as the old battery Varta, Bosch, Exide, Mutlu

Tools

5
  • 10 mm and 13 mm wrenches or sockets (with an extension)
  • low-range torque wrench
  • terminal brush or terminal cleaner
  • gloves and safety glasses
  • 12 V memory saver (if needed to keep the vehicle settings)

Step by step

14 steps
  1. Park the vehicle on level ground, turn the ignition off, close all doors, and switch off all electrical consumers. Remove the key and move away from the vehicle with it if the key is keyless. Open the hood and locate the battery in the engine compartment.
  2. If you need to keep the settings (clock, radio, window memory), connect an external 12 V source to the cigarette lighter socket or to the terminals. Do not use a weak "alligator clip" setup for this, as it can produce a spark.
  3. Remove the plastic cover or battery shroud, if there is one. Make sure there is no open flame nearby and no metal objects that could short the terminals.
  4. Loosen and remove the negative terminal (black, "-"), move it aside, and secure it so it does not touch the post. The negative is always disconnected first.
  5. Then remove the positive terminal ("+", red). Flip up the protective cap and disconnect the terminal. If the terminal is stuck, gently rock it back and forth; do not hit the post.
  6. Unscrew the hold-down bracket or frame that secures the base of the battery case. Whether you need a 13 mm or 10 mm wrench depends on the mounting design.
  7. Lift out the old battery with both hands and keep it level. It usually weighs about 15-20 kg. Do not tilt it, to avoid spilling electrolyte.
  8. Clean the battery tray and the battery box of dirt and corrosion. If there are signs of corrosion, wipe with a baking soda solution and dry. Clean the inner surfaces of the terminals until bright.
  9. Compare the new battery with the old one: polarity (positive on the same side), dimensions, and the position of the vent port. If the old battery had a gas vent or hose, transfer it to the new one.
  10. Install the new battery and secure it with the hold-down bracket. The mount must prevent any movement but must not deform the case. Hold-down tightening torque is approximately 5-10 N·m (4-7 lb-ft) (within the thread's limit, without overtightening).
  11. Connect the positive terminal first, then the negative terminal. Tighten the terminals moderately, approximately 5-8 N·m (4-6 lb-ft), so that the terminal cannot be turned on the post by hand. Do not overtighten the lead post. Apply a thin layer of electrical contact grease to the terminals and close the protective cap.
  12. Turn the ignition on, let the control modules initialize, and start the engine. Check that there are no warnings on the instrument cluster. Check the voltage with the engine running: at the terminals it should be about 13.8-14.7 V.
  13. Restore the settings: clock, date, radio, one-touch window operation (a reset and re-initialization are needed if the windows lost their auto mode). If start-stop or regenerative braking system warnings stay on after replacement, the battery must be "registered" with a diagnostic scan tool. This is done at a repair shop if you do not have suitable equipment.
  14. Take the old battery to a recycling drop-off point: it must not be thrown away, since it contains lead and acid.

Common mistakes and warnings

  • Do not short the terminals with a tool
  • Wear safety glasses and gloves while working: the electrolyte is corrosive, and explosive gas is released during charging and when shorted
  • Do not change the order of disconnecting and connecting the terminals (the negative is removed first and connected last)
  • If the battery is old, check the alternator before replacing it: the charging voltage with the engine running should be about 13.8-14.7 V, otherwise the new battery will quickly fail
  • For vehicles with start-stop, install only the matching battery type (EFB or AGM)