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Your cart is empty.The Rechargeable Amp Power Pack offers a convenient reusable power solution for select Roland mobile amplifiers that support battery operation, including the CUBE Street EX, AC-33 Acoustic Chorus, and other models. The one-piece design pops easily into the back of the amplifier, eliminating the need to fuss with multiple AA-size batteries. But the benefits don’t stop there—you also get up to twice the runtime over standard batteries, and the amplifier delivers output power and SPL that’s nearly equivalent to using the AC adaptor.*
Steven Parankewich
Reviewed in the United States on March 9, 2025
I had the same problem of DOA Dead on Arrival as all these other reviews and of course I didn’t read the manual completely so I asked Chat GPT. It pointed me to the manual and told me this:•Try unplugging and plugging the adaptor into the DC IN jack several times. Once the voltage reaches a level where charging is possible, the FAIL indicator turns off, the CHARGE indicator blinks and you can keep charging.This worked for my battery off Amazon. I had to plug it in, wait about 2 seconds, unplug it and wait 2 seconds. Repeated that about 10ish times and then it started charging.The reason I didn’t try this the first time is I DID NOT have a Fail light. It would blink 3 times but would just never charge. After doing this though, it blinked 3 times and actually started charging with slow blinks.They should make this more obvious as all the Amazon buyers are complaining they are DOA but this is apparently a known issue with all NIMH type batteries. The issue is they have gone dead in the warehouse and need to be kicked back into gear with this method.I will update my Stars after using this for a month.
Robert W. Steele
Reviewed in the United States on March 11, 2025
These batteries are just as bad as the reviews have mentioned. Thus far I have received 2 and neither one has changed, and, yes, I have the correct charger. Very poor quality control.
Charles A. Smolsky II
Reviewed in the United States on March 10, 2025
Item was Dead on Arrival. Will not accept a charge from a genuine Roland known good charger. No response from Roland Customer Service. Seems like it would be a great alternative to replacing or charging mutliple AA batteries, but not if it can only be used as a paperweight.
Voice Of Reason
Reviewed in the United States on February 16, 2025
I purchased 4 of these to use with my 2 Roland Street Cube amps.They will not hold a charge. Too late to return them.THEY ARE CRAP! - AVOID - AVOID - AVOID! $600 WASTED!I'm going to crack them open and see if I can install some fresh batteries.
Joe Vetter
Reviewed in the United States on January 2, 2025
I purchased two of these batteries. Neither one will charge and roll on customer support says it is a bad batch. Amazon will not take the return and Rowland will not replace. Do not order these batteries.
customer
Reviewed in the United States on August 30, 2024
Thought maybe we were going to be lucky - but like all the others - doesn't charge. And the process to get an exception refund is not a simple "amazon return". Better to go to a Roland dealer and have them order it so you deal with your local store when it doesn't work.
art starling
Reviewed in Canada on August 11, 2024
Return this item as I have ordered another one hoping it’s just a defective battery
Peter D Black
Reviewed in Canada on July 27, 2024
Battery won’t charge, followed various suggestions on Roland site, nothing worked.
Paul Balcom
Reviewed in the United States on June 19, 2024
Dead on arrival!
Customer
Reviewed in the United States on November 9, 2024
I bought the Roland KC-220 a few years ago and LOVE it. Works great as a small PA for the bluegrass group I play with. Works great for playing music while I'm working in the yard. Performs flawlessly as a monitor for my synthesizers and drum machines.This power pack extends ALL those uses. You get more useable output volume and runs for a much longer time as opposed to AA batteries.You will need the AC adaptor that came with your KC-220 to recharge it.
mtnview
Reviewed in Canada on January 2, 2024
Won't charge
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