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[Solved] Raleigh Impulse IR HS E-bike: 36V 540Wh Battery Not Charging with New Charger (Flashing Red/Green)

zubo_dawid 16719 13
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  • #1 16975780
    zubo_dawid
    Level 9  
    Hello
    I have a raleigh impulse ir hs electric bike.
    I have a problem with charging the battery
    I bought a charger because the old one was damaged by a fall :)
    Exactly a 36V 540Wh battery for 4 days
    Normally the charger glowed red after being charged glowed green
    The new charger starts flashing red and after about a minute it switches to green.
    I left it for 5 hours and the battery is not charging,
    I would like to add that the battery has about 30% charge, it is not discharged to 0%.
    Help plzzzz? I bought the wrong charger?
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  • #2 16975957
    michalek1988
    Level 26  
    Do you have the housings of both chargers in front of you? Compare the voltage values (if too low, you will not charge) and the output currents (responsible for the charging time). How can you measure it if the voltage coming out of the charger is around 44V. If it's below 36, you surely won't be able to charge. It will be difficult to tell you why it is not charging without seeing the charger. PS you didn't get the polarity wrong?
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  • #3 16975983
    zubo_dawid
    Level 9  
    Hmmm, there is only one connection option. Here is a photo of the plug and a description of the new charger. I do not have the old one because it was massacred.
    This is what I can say for these moments. If there are any suggestions, I'll try to get it right quickly.
    Attachments:
    • Raleigh Impulse IR HS E-bike: 36V 540Wh Battery Not Charging with New Charger (Flashing Red/Green) 1516477471313-1191189914.jpg (1.6 MB) You must be logged in to download this attachment.
    • Raleigh Impulse IR HS E-bike: 36V 540Wh Battery Not Charging with New Charger (Flashing Red/Green) 1516477498602-1550883407.jpg (1.54 MB) You must be logged in to download this attachment.
  • Helpful post
    #4 16976027
    michalek1988
    Level 26  
    Determine the output voltage, compare if the corresponding values match the original one (search for it by the model). I found the same charger with a different DC plug and a higher output voltage of 43.8V. we will not move on without taking measurements. Maybe the charger is OK and the voltage is not reaching the battery. Measure everything and write conclusions.
  • #5 16976032
    zubo_dawid
    Level 9  
    Ok tomorrow I will try to measure.
    Added after 3 [minutes]:
    Adds photo of battery and plug
    Attachments:
    • Raleigh Impulse IR HS E-bike: 36V 540Wh Battery Not Charging with New Charger (Flashing Red/Green) 20180115_215952.jpg (962.39 KB) You must be logged in to download this attachment.
    • Raleigh Impulse IR HS E-bike: 36V 540Wh Battery Not Charging with New Charger (Flashing Red/Green) 20180115_220003.jpg (1.58 MB) You must be logged in to download this attachment.
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  • #6 16977035
    zubo_dawid
    Level 9  
    In answer to the question, 42 V outgoing voltage
  • #7 16977119
    DIORADIO
    Level 32  
    Measure which pins in the plug from the power supply do you have voltage and what? Also measure the voltage in which "holes" in the socket you have the battery voltage. They are numbered.
  • #8 16977155
    Freddy
    Level 43  
    zubo_dawid wrote:
    I do not have the old one because it was massacred
    I don't understand, since it fell, you just probably broken. Maybe it can be repaired, glued.
    Maybe you can at least see the parameters and on which pins what is connected.
  • #9 16978147
    zubo_dawid
    Level 9  
    In the power supply, 1-3 and 3-4. I'll check the batteries tomorrow. AND
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  • #10 16979042
    michalek1988
    Level 26  
    Measure and give voltage to 1-2, 1-3, etc. (each with each) both in the charger and the power supply. What were you suggesting when buying this one and not another. I mean, the seller advised you, is it for your bike model, etc.? From the previous charger you do not have either a housing or electronics? The battery had less than 30% charge before being charged for the first time?
  • #11 16979220
    zubo_dawid
    Level 9  
    Unfortunately I do not have. I had my bike on the balcony on the 3rd floor; / It fell from a considerable height; / good that it did not fly over someone's head. Now I work in the basement for safety. I will measure all the configurations and give it when I come back from work. Thanks
  • #12 17665324
    biku
    Level 13  
    Hello, do you have any information about these pins from the power supply? what does 1-3 and 3-4 mean?
    Best regards.
  • #13 17702421
    zubo_dawid
    Level 9  
    I sent the batteries back to the service that deals with batteries. After putting on the foot adapter, everything is fine. Greetings
  • #14 17702424
    zubo_dawid
    Level 9  
    I sent the batteries back to the service that deals with batteries. After putting on the foot adapter, everything is fine. Greetings

    Added after 47 [seconds]:

    So I close the topic
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Topic summary

✨ The discussion revolves around a charging issue with a Raleigh Impulse IR HS electric bike's 36V 540Wh battery after the original charger was damaged. The user reports that the new charger flashes red and then turns green without charging the battery, which still has about 30% charge. Participants suggest checking the output voltage of the new charger, comparing it to the original charger's specifications, and measuring the voltage at various points in the charging system. The user later confirms that the output voltage of the new charger is 42V. Ultimately, the user resolves the issue by sending the battery to a service for repair, which involved using a foot adapter.
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FAQ

TL;DR: For a 36 V Raleigh Impulse IR HS pack, the charger should read about 43.8 V; if the LED flashes red then quickly turns green, verify plug pinout and polarity first—“Measure everything and write conclusions.” [Elektroda, michalek1988, post #16976027]

Why it matters:** This FAQ helps Raleigh Impulse IR HS owners fix “new charger, no charge” issues fast and safely.

Quick Facts

Why does my new charger flash red then turn green but not charge?

That pattern matched a mis‑match at the connector side, not a flat battery. The OP saw red→green in about a minute, left it five hours, and the state of charge stayed the same. Treat fast red→green as “no hand‑shake” between charger and battery, then verify plug pinout and polarity. [Elektroda, zubo_dawid, post #16975780]

What voltage should a 36 V e‑bike charger show with no load?

Expect around 44 V open‑circuit on a 36 V lithium pack charger. One helper stated you should see about 44 V and warned that below 36 V it won’t charge. Quote: “If it’s below 36, you surely won’t be able to charge.” [Elektroda, michalek1988, post #16975957]

Is a 42 V reading on the charger normal for this case?

The OP measured 42 V at the charger plug. Charging still did not start. This shows that a plausible voltage alone does not confirm compatibility. You must also confirm polarity and which pins carry voltage at the bike’s socket. [Elektroda, zubo_dawid, post #16977035]

How do I test which pins actually carry voltage?

Measure between numbered pin pairs on both charger plug and battery socket. A contributor asked to identify which plug pins have voltage and to map the battery socket holes the same way, since they are numbered. This isolates wiring and polarity issues. [Elektroda, DIORADIO, post #16977119]

What does “1–3 and 3–4” mean in the pin notes?

That was the user reporting which pin pairs showed voltage continuity on the power supply plug. It indicates where voltage was present, not necessarily the correct charging pair for the battery’s socket. Always confirm against the battery receptacle mapping. [Elektroda, zubo_dawid, post #16978147]

How do I methodically measure all pin combinations?

Follow a full matrix: measure 1–2, 1–3, 1–4, 2–3, 2–4, and 3–4 on both charger and battery. A helper explicitly requested each‑with‑each measurements to pinpoint the correct pair and polarity. This prevents guesswork during troubleshooting. [Elektroda, michalek1988, post #16979042]

Could wrong polarity stop charging even if the plug fits?

Yes. The thread warns to verify polarity, because a correct‑looking plug can still be wired differently. If polarity is wrong, charging does not begin, and the LED can misleadingly turn green quickly. “PS you didn’t get the polarity wrong?” [Elektroda, michalek1988, post #16975957]

Does a 30% battery level block the charge from starting?

No. The OP reported about 30% remaining, not 0%, yet charging never began. That rules out deep‑discharge lockout in this case and points back to connector wiring or compatibility checks. [Elektroda, zubo_dawid, post #16975780]

What ultimately fixed the Raleigh Impulse IR HS charging issue here?

The user sent the battery to a battery service. After they fitted an adapter (described as a “foot adapter”), charging worked normally. This indicates a connector or interface mismatch was the root cause, not cell state. [Elektroda, zubo_dawid, post #17702424]

How should I choose a replacement charger for this bike?

Match the original model’s output voltage and current, the exact DC plug, and pinout. One helper asked what guided the purchase and urged comparing against the original and measuring all pin pairs. When unsure, confirm with the seller for this bike model. [Elektroda, michalek1988, post #16979042]

Can a dropped charger be salvaged to read its specs and wiring?

Possibly. A contributor suggested that a fall often breaks the housing, which might be repairable. You could still inspect labels or the board to record voltage, current, and pin wiring before buying a replacement. [Elektroda, Freddy, post #16977155]

What quick checks should I do before sending the battery to service?

Three-step how‑to: 1. Measure open‑circuit charger voltage (~44 V target). 2. Verify polarity and which pins are live at the plug. 3. Map the battery socket pins and confirm the matching pair. “Measure everything and write conclusions.” [Elektroda, michalek1988, post #16976027]

Is a red LED turning green in about a minute normal behavior?

In this case, no. The OP’s charger went green in about a minute but delivered no charge after five hours. Treat rapid green as a fault or incompatibility indicator, then check pinout and polarity as first steps. [Elektroda, zubo_dawid, post #16975780]

What connector-related edge case should I know about?

A physically compatible plug can require an adapter to match the battery’s specific pin assignments. The reported fix was adding an adapter, which restored normal charging with the new unit. [Elektroda, zubo_dawid, post #17702424]

What did an expert recommend as the guiding principle here?

“Determine the output voltage… we will not move on without taking measurements.” The helper emphasized measurement first to avoid replacing parts blindly and to confirm compatibility. [Elektroda, michalek1988, post #16976027]
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