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expiredthe-press-box posted Dec 19, 2024 11:58 PM
expiredthe-press-box posted Dec 19, 2024 11:58 PM

27.5" Haven Bikes Power Wave 250W Step Thru Electric Hybrid Bike (Small or Medium)

+ Free Shipping

$450

$900

50% off
Mendham Bikes
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Deal Details
Mendham Bikes has 27.5" Haven Bikes Power Wave 250W Step Thru Electric Hybrid Bike (Silver, Small or Medium) on sale for $899.99 - $449.99 with discount code RIDETHEWAVE during checkout = $450. Shipping is free.

Thanks to Staff Member the-press-box for sharing this deal.

About this Item:
  • The Power Wave features a lightweight aluminum frame and fork, rear luggage rack, front and rear fenders and a versatile 8 speed drivetrain. The hydraulic disc brakes provide excellent stopping power. It's 250 Watt, 36V Mid-Drive Bafang motor will provide an extra power boost with higher effort pedaling, thanks to its intelligent drive unit.
  • Max Weight: 250lbs.
  • Boost Engage: Pedal Assist

Editor's Notes

Written by SaltyOne | Staff
  • Rated 4.7 out of 5 stars from customer reviews.
Please see the original post for additional details & refer to the comments below for discussion.

Original Post

Written by the-press-box
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Mendham Bikes has 27.5" Haven Bikes Power Wave 250W Step Thru Electric Hybrid Bike (Silver, Small or Medium) on sale for $899.99 - $449.99 with discount code RIDETHEWAVE during checkout = $450. Shipping is free.

Thanks to Staff Member the-press-box for sharing this deal.

About this Item:
  • The Power Wave features a lightweight aluminum frame and fork, rear luggage rack, front and rear fenders and a versatile 8 speed drivetrain. The hydraulic disc brakes provide excellent stopping power. It's 250 Watt, 36V Mid-Drive Bafang motor will provide an extra power boost with higher effort pedaling, thanks to its intelligent drive unit.
  • Max Weight: 250lbs.
  • Boost Engage: Pedal Assist

Editor's Notes

Written by SaltyOne | Staff
  • Rated 4.7 out of 5 stars from customer reviews.
Please see the original post for additional details & refer to the comments below for discussion.

Original Post

Written by the-press-box

Community Voting

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Top Comments

nellenbu
550 Posts
142 Reputation
Do not order from this company. I fell for it on the last deal and it has been an absolute nightmare.

The first bike arrived damaged and unusable. They refused to honor their return policy, insisting that I either repair it myself (they sent me a link to a YouTube video wtf) or bring it to a mechanic at my own risk. Suffice to say, I opened a credit card dispute and am still fighting to retain my credit.

The second bike hadn't been shipped when the issues with the first began, so I requested a cancellation, which they confirmed. Then they shipped it anyway. I refused the delivery. It arrived at their facility 2 weeks ago and I still haven't received a refund. Another dispute was opened and I'm having to deal with that now.

Edit: just checked and the first dispute was finally resolved in my favor just this morning. Now on to the second dispute…
deucesh75
25 Posts
14 Reputation
Stay as far away from Mendham Bikes as you can. HORRIBLE company. I trust SD's and have never been burned....until the last Mendham deal. It's been a horrendous and miserable experience that has cost a dozen or so hours thus far.

I ordered one of the Able bikes in the last deal. About three weeks went by between the time of the order and when I realized I hadn't received the bike. Meanwhile, they spammed the heck out of my email account with other "promotions". I emailed the general customer service email address demanding they provide me an update. No response. About another week goes by and I get a "your order shipped" email notification. Great! Fantastic! Except that a few hours after receiving that email, I got a retraction saying they had made a mistake and my order hadn't shipped.

I emailed them to demand cancellation of the order based on the long wait and my spidey senses telling me something was off. I actually got a response within a few hours that acknowledged my request and told me the order would be cancelled. Guess what? The next day, Mendham shipped the bike. Geez. When I got the shipment notification, I started checking the tracking and noticed it took them more than a day to actually ship the bike (they just issued tracking by creating a shipping label). In the interim, I again emailed them about cancellation and warned them not to ship. No response. The bike arrived and box and interior parts were beat to hell. I put in a dispute with my credit card company, who immediately issued a confirmation of successful dispute, a sign they know what Mendham is up to. I tried several more times to demand they take the bike back. They finally responded on the third email and asked for a huge list of items. I took the bike to a charity that fixes up bikes and gives to kids in need. I'll just rely on my CC underwriter.

Please save yourself from the same headaches and from having to write an equally painful testimonial on SD by just skipping this "deal". It's not a deal and if you research online, you find the bikes are junk anyways.
pinmagic
499 Posts
175 Reputation
It's mid-drive. They require substantially less power than hub drives. They also tend to be more expensive than hub drives.

256 Comments

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Jan 16, 2025 04:14 AM
51 Posts
Joined Dec 2007
townes75Jan 16, 2025 04:14 AM
51 Posts
Quote from freezypops :
They are sending you a replacement fork? I wasnt offered that option on our 4 bikes that all came with bent forks.
They didn't offer it originally, but my local bike shop recommended that I ask them if they could send me one. I called customer service and asked for a replacement fork and he said he'd check, but came up empty. However, I was offered a $100 credit if my local bike shop had one in stock or could source one but they could not.

I emailed back explaining the situation and asking for a refund for the labor that was done before they discovered the damaged fork, explaining the hassle, and asking how they could "make this right."

A day or so later I got a response that they found a box of forks and I just received it today and took it to my bike shop. They said they sent me a "universal" sized one and that they need to cut it down a little and put in a starnut but that it's very doable. I was also told through email that mendham/kent would refund the initial $70 of labor which was done before they discovered the damaged fork.

tl;dr if you received a damaged fork, email them and they'll send a replacement for free, but it needs to be cut down a little to fit.
1
Jan 16, 2025 01:40 PM
285 Posts
Joined Jun 2013
freezypopsJan 16, 2025 01:40 PM
285 Posts
Quote from greatwolf :
The forks on all 4 of them are like that? That sounds like more than just bad luck.

I just called Kent's support number regarding my misaligned fork. They also informed me they have replacement fork available. I emailed them couple of photos showing the fork problem. My claim is processing now and the rep said it should take a day or two. I'll report back how it goes.
Yes i wasnt given that option. Its possible the state of the rest of the bikes was to banged up for them to consider that. Ive requested replacement bikes get shipped freight. In theory the boxes should be in very similar condition when i receive them as they were when they were shipped. Assuming its palletized and strapped. However even freight can get pretty banged up as the fork lift drivers at the docks are usually going as fast as possible.
Jan 16, 2025 07:11 PM
172 Posts
Joined Jan 2014
greatwolfJan 16, 2025 07:11 PM
172 Posts
Quote from townes75 :
They didn't offer it originally, but my local bike shop recommended that I ask them if they could send me one. I called customer service and asked for a replacement fork and he said he'd check, but came up empty. However, I was offered a $100 credit if my local bike shop had one in stock or could source one but they could not. I emailed back explaining the situation and asking for a refund for the labor that was done before they discovered the damaged fork, explaining the hassle, and asking how they could "make this right."A day or so later I got a response that they found a box of forks and I just received it today and took it to my bike shop. They said they sent me a "universal" sized one and that they need to cut it down a little and put in a starnut but that it's very doable. I was also told through email that mendham/kent would refund the initial $70 of labor which was done before they discovered the damaged fork. tl;dr if you received a damaged fork, email them and they'll send a replacement for free, but it needs to be cut down a little to fit.
Can you share a picture of what the 'universal' fork looks like? Just trying to get an idea of how it differs from the stock fork. eg. Is it also aluminum? Does it have mount points for the fender? etc.
Jan 17, 2025 08:58 PM
195 Posts
Joined Mar 2015
MartogJan 17, 2025 08:58 PM
195 Posts

Our community has rated this post as helpful. If you agree, why not thank Martog

Update on battery capacity testing…
I've run multiple full capacity tests (from completely full battery to low voltage cutoff). Here are the results:

1) 10.93 Ah
2) 11.16 Ah
3) 7.42 Ah (low temperature charge/discharge -yikes!)
4) 11.25 Ah
5) 11.27 Ah

So it looks like my battery is settling in around 11.25 Ah capacity out of a claimed 11.6 Ah. So a loss of -3% due to calendar aging. Acceptable.

Note that test #3 was done when the battery was being charged/discharged in a garage that averaged 35-40 degrees. All other tests were done at around 70 degrees. That really shows the performance hit that comes with operating Li-ion batteries in low temps.

In case anyone wants to know, the pack comes in about 41v hot off the charger and hits low voltage BMS cutoff around 30v. The LED status light goes blinks red around 33v and the pack has around 1.5-2 Ah left when it starts blinking red.

It also appears that once LVC is hit, the BMS will not turn back on until a charge from the charger triggers a release of the LVC status. Some batteries will come back to life for a bit if you let them rest for a while. I don't believe that to be the case with these.

All in all, pretty good outcomes. But I don't trust the dinky little charger as it gets extremely hot during a full charge so I'll will adapt a more robust charger and use it instead.
1
Jan 18, 2025 05:30 AM
640 Posts
Joined Sep 2014
acbharath14Jan 18, 2025 05:30 AM
640 Posts
Quote from Martog :
Update on battery capacity testing…
I've run multiple full capacity tests (from completely full battery to low voltage cutoff). Here are the results:

1) 10.93 Ah
2) 11.16 Ah
3) 7.42 Ah (low temperature charge/discharge -yikes!)
4) 11.25 Ah
5) 11.27 Ah

So it looks like my battery is settling in around 11.25 Ah capacity out of a claimed 11.6 Ah. So a loss of -3% due to calendar aging. Acceptable.

Note that test #3 was done when the battery was being charged/discharged in a garage that averaged 35-40 degrees. All other tests were done at around 70 degrees. That really shows the performance hit that comes with operating Li-ion batteries in low temps.

In case anyone wants to know, the pack comes in about 41v hot off the charger and hits low voltage BMS cutoff around 30v. The LED status light goes blinks red around 33v and the pack has around 1.5-2 Ah left when it starts blinking red.

It also appears that once LVC is hit, the BMS will not turn back on until a charge from the charger triggers a release of the LVC status. Some batteries will come back to life for a bit if you let them rest for a while. I don't believe that to be the case with these.

All in all, pretty good outcomes. But I don't trust the dinky little charger as it gets extremely hot during a full charge so I'll will adapt a more robust charger and use it instead.
Thank you for the detailed analysis
Jan 18, 2025 06:04 AM
51 Posts
Joined Dec 2007
townes75Jan 18, 2025 06:04 AM
51 Posts
Saga continues: My local bike shop called to say my bike was complete and ready to go; however, they told me that during the build they noticed "a bent spoke" and "that the spoke nipple is pulling through the rim."

I asked them if the bike was rideable and they said yes, "but if it was one of our bikes that we sell" they would "submit a warranty for a replacement front wheel or at minimum have it documented for future if the rim does fail over a short period of time."

I emailed back Dan, from Kent Bikes (who's been great by the way), who told me he emailed the warehouse in S.C. about sending me a replacement wheel if they have it.

If anyone cares at this point, I'll keep you updated on how I make out.
Jan 18, 2025 07:44 AM
172 Posts
Joined Jan 2014
greatwolfJan 18, 2025 07:44 AM
172 Posts
Quote from Martog :
Update on battery capacity testing…I've run multiple full capacity tests (from completely full battery to low voltage cutoff). Here are the results:1) 10.93 Ah2) 11.16 Ah3) 7.42 Ah (low temperature charge/discharge -yikes!)4) 11.25 Ah5) 11.27 AhSo it looks like my battery is settling in around 11.25 Ah capacity out of a claimed 11.6 Ah. So a loss of -3% due to calendar aging. Acceptable. Note that test #3 was done when the battery was being charged/discharged in a garage that averaged 35-40 degrees. All other tests were done at around 70 degrees. That really shows the performance hit that comes with operating Li-ion batteries in low temps. In case anyone wants to know, the pack comes in about 41v hot off the charger and hits low voltage BMS cutoff around 30v. The LED status light goes blinks red around 33v and the pack has around 1.5-2 Ah left when it starts blinking red. It also appears that once LVC is hit, the BMS will not turn back on until a charge from the charger triggers a release of the LVC status. Some batteries will come back to life for a bit if you let them rest for a while. I don't believe that to be the case with these. All in all, pretty good outcomes. But I don't trust the dinky little charger as it gets extremely hot during a full charge so I'll will adapt a more robust charger and use it instead.
Just wondering how you went about testing it. Did you use any special equipment?

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Jan 18, 2025 04:48 PM
195 Posts
Joined Mar 2015
MartogJan 18, 2025 04:48 PM
195 Posts
Quote from greatwolf :
Just wondering how you went about testing it. Did you use any special equipment?
Used a MakerHawk load-based capacity tester. You can find them on Amazon. I've compared it to a shunt-based coulomb counter and it seems pretty darn accurate.
1
Jan 23, 2025 04:04 AM
172 Posts
Joined Jan 2014
greatwolfJan 23, 2025 04:04 AM
172 Posts
okay, I received my replacement fork. It's well packaged this time and it appears undamaged. The stem is oversized a bit, will be bringing it to my local bike shop to install. Hopefully they can cut it to the appropriate size.
Jan 30, 2025 04:46 AM
51 Posts
Joined Dec 2007
townes75Jan 30, 2025 04:46 AM
51 Posts
Quote from Martog :
That's good news!

Did they offer to pay for shop labor to do the swap or are they expecting you to do the work yourself?

I'm sure some folks will have the ability to do it themselves but maybe not everyone.
They covered my shop labor 👍
Jan 30, 2025 04:58 AM
51 Posts
Joined Dec 2007
townes75Jan 30, 2025 04:58 AM
51 Posts
Quote from freezypops :
They are sending you a replacement fork? I wasnt offered that option on our 4 bikes that all came with bent forks.
They did, I had to bitch nicely a bit lol, but then they shipped me one that was extremely well packaged and also reimbursed me for the assembly the shop had done up until finding the bent fork. Unfortunately, they also discovered a bent spoke on the front wheel and that the "spoke nipple is pulling through the front rim." The bike shop guy said he thinks it's "rideable" but would ask for a limited warranty in case the rim "fails over a short period of time."

So, I contacted "my guy" again at Kent I think it said, and asked if they had a replacement front wheel or if he could at least offer me a limited warranty. He checked, but no dice on a spare, but offered me an additional $75 off and I also filled out the form which gives you $75 off if a bike shop assembles it and it looks like that will go through soon as well.
Last edited by townes75 January 29, 2025 at 10:02 PM.
Jan 30, 2025 05:07 AM
51 Posts
Joined Dec 2007
townes75Jan 30, 2025 05:07 AM
51 Posts
Quote from greatwolf :
Can you share a picture of what the 'universal' fork looks like? Just trying to get an idea of how it differs from the stock fork. eg. Is it also aluminum? Does it have mount points for the fender? etc.
Sorry, was out of town and missed this.. hopefully your bike shop was able to work with it. My invoice said they needed to use a "headset starnut" if that helps at all..
Last edited by townes75 January 29, 2025 at 10:13 PM.
Feb 09, 2025 05:49 AM
172 Posts
Joined Jan 2014
greatwolfFeb 09, 2025 05:49 AM
172 Posts
Just as a final update on my situation. Got the new fork installed on my bike. Labor from my LBS was about $70. Emailed Kent a photo of receipt and am getting my assembly rebate for it shortly.

All in all, even though the bike arrived with a bad fork, Kent did make things right for me by shipping a well-packaged replacement fork as well as covering cost of installation labor at my LBS. Everything worked out in the end and I'm reasonably happy with the purchase.
Feb 16, 2025 03:36 AM
65 Posts
Joined May 2015
snowranger69Feb 16, 2025 03:36 AM
65 Posts
I was riding today and experienced random assist cutouts without any warning. The assist just stopped followed by a ratcheting sounds from the motor. I had to stop pedalling and then pedal again to re engage the system. Has anyone else experienced this?

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Mar 20, 2025 06:38 PM
37 Posts
Joined Dec 2024
FairPassenger4373Mar 20, 2025 06:38 PM
37 Posts
Quote from townes75 :
So, I contacted "my guy" again at Kent I think it said, and asked if they had a replacement front wheel or if he could at least offer me a limited warranty. He checked, but no dice on a spare, but offered me an additional $75 off and I also filled out the form which gives you $75 off if a bike shop assembles it and it looks like that will go through soon as well.
Keep trying on the wheel. At first they couldn't send me one either. But they did in the end. From the shape of it, I'm guessing it's from a returned bike they were parting out. Since the replacement wheel had all the same signs of damage that the original wheel did but just not as bad. My original wheel had bent and one broken spoke, the replacement wheel only had bent spokes. So I was able to build one full working wheel by harvesting good spokes from my original wheel to replace the bent spokes on the replacement wheel.
The QC on these bikes is not good. The replacement wheel did not drop in fit compared to the original wheel. It was off a little so I had to reposition the caliper. Also I've noticed that the wheels are not centered in relation to the frame. The wheels are over to the left a centimeter or so.
All in all, I did get a middrive bike for about $500 which is great value. It actually rides pretty great. It was definitely not ready to ride on delivery. These should not have been sold as new. They should have been sold as open box at best or tinkering specials. I was pleasantly shocked by the customer service. They were very responsive. I was expecting the horror stories I read in the reviews. But I think the difference is that Kent is now the customer service and not Mendham.
So it took some work but in the end it worked out. Mendham, it's not a purchase it's a journey.

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