This battery is designed to meet the needs of owners of older e-bikes (from the early 2000’s through the late 2010s) who have a 36V downtube mounted battery pack. More recently, many newer e-bikes have transitioned to 48V downtube-mounted battery packs. These 36V battery packs are less commonly available today due to the shift toward 48V. They do provide a viable solution for the owner of an older bike that requires a compatible battery pack.
If you are looking for a 36V battery pack for your older e-bike and you can’t find the original manufacturer’s battery pack. Then this product may be worth considering. If however, you are looking for a battery pack for a 48V e-bike, then this product would not be suitable. Additionally, if you require fast charging capabilities or you prefer a battery pack with digital displays, then this product may not meet all of your requirements. Finally, if you have a high powered e-bike with a motor rating exceeding 700W, then this product may not be capable of meeting your energy demands.
Specs and Build Quality
As far as compatibility is concerned, this product utilizes a traditional 4-pin connector to connect directly to most e-bikes. In addition, it has a 2-pin connector for charging. Both connectors utilize standard pinouts and make cross-brand replacements possible if both products utilize the same type of connections.
Range, Charging, and Protection
Additionally, Yose Power has implemented overcharge protection, over-discharge protection, and short circuit protection features in the design of this battery pack. With respect to charging time, this product can take approximately seven hours to reach full charge utilizing the supplied 42V 2A charger. Faster charging times are possible with third party chargers, specifically those that produce 42V @ 3a or 42V @ 4a. However, the supplied charger provides an acceptable charging speed for the majority of users.
What Amazon Reviewers Are Saying
Amazon review feedback on this product indicates that it functions properly as a replacement battery pack for older bikes. While there were several comments made regarding the slower charging time provided by the supplied charger, most users indicated that they received their order in a timely manner and that it functioned as expected. Based upon user experience and feedback from Amazon reviewers, it appears that this product is well suited for those requiring a lower-cost battery pack replacement for their older 36V e-bike.
I have to be honest about the sample size. There are only five reviewers for this product and that is nothing statistically, so a 4.0 rating could indicate there was a real issue with at least one of the buyers. In terms of issues related to products such as this, the common threads for all categories tend to follow similar patterns. These include packs arriving with less actual capacity than what they claim to hold, charging units dying quickly after being charged and/or misfitting brackets (where the buyer purchased a frame model type that does not fit their bracket). As none of these trends appear to be occurring based upon the limited amount of reviewers, I would recommend using them as a list to check in the first week when purchasing a replacement pack, but do not consider them as confirmed defects in this particular case.
Current listing: Yose Power 36V 13Ah on Amazon.
Who Is This Battery For?
One advantage of purchasing from Yose Power instead of a generic name-brand importer is the fact that Yose Power has created a customer service department and will carry replacement chargers and spares to replace any components on the pack if needed. Based upon comments made by other Yose Power customers throughout their catalog, if the reviewer needs help regarding a question they may have about a charger or connection issue, they can get answers back from the seller. For most people that ride older bicycles (250W-350W) with a dead downtube pack, this is simply replacing a broken part with another identical part. Since most newer frames use some sort of mounting system that is different from a bottle-style mount, and since this pack’s maximum rated wattage is very modest compared to many current batteries available today, this is not a battery designed for new builds. However, it does provide continuity. If you already have a bicycle that rides well, and the only problem you have is the battery in the downtube, replacing the old battery with an identical new one is significantly cheaper than buying a completely new bike and keeps you riding on a familiar piece of equipment that you understand how to repair. Yose Power being one of the few established sellers still making 36V downtube packs is the whole reason this listing matters.
Frequently Asked Questions
Will this fit my bike's downtube?
Yes. The battery fits inside most 36-volt downtube battery frames. Check your original battery and measure your downtube inner diameter before purchasing. If your measurements don't differ significantly, it should install correctly. The bracket holds onto the side of the downtube using friction and bolts at the bottom.
Can I use this battery on my 48V ebike?
No. Your motor expects 54.6 volts at max charge and your new battery only produces 42 volts. Using this battery on your 48 volt e-bike will cause serious damage to your controller. Only purchase this battery for your 36-volt e-bike.
How long does the charge take?
About seven hours empty to full with included charger. If you start with 50 percent charge before plugging it in, expect three and one half hours. You can purchase a higher amp 42-volt charger separately if you want faster top-ups. Any third party chargers of same barrel size work fine on these batteries. All you need to do is ensure that you match the voltage perfectly and keep your charging rate at 3 amps or below (or whatever Yose Power tells you), because a low-cost 5 amp charger pushes cells harder than the BMS anticipates.
Is the key lock removable?
Yes. Lock cylinder is removable and replacable. If you lose key, you can get replacement lock cylinder from Yose Power or local locksmith. Lock helps prevent casual theft but isn't high-security device. Always use cable lock when parking for extra protection. A determined thief cuts any of these cases in seconds, so think of the lock as a deterrent for opportunistic grabs rather than real security.
Should I store my battery pack at least half charged?
Yes. Leaving a lithium-ion battery fully charged or completely discharged for long time causes rapid capacity degradation. Try to keep between 40 percent and 60 percent charge level during storage period longer than couple weeks. Every month or two check level and add some charge if needed. Always store in dry, cool location. A closet that stays above freezing beats an unheated garage every time, and never leave the pack sitting on a concrete floor through winter.
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See how this pack stacks up in our ebike battery comparison table, or catch up on the GoMotorbikes blog. Brand info: Yose Power official site.