Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Are replacement battery chargers available?
Document: I'm hoping I can buy a replacement speaker that will provide a better alarm as well. Currently, I've only been able to use the clock outdoors buy hooking it up to a portable car battery charging unit.As other people have mentioned, there is no information about how to contact MacGregor concerning clock issues.
Perhaps I can find a replacement battery.Update: I eventually got fed up and tore the unit apart to see what was causing the charging feature to not work. Turns out it was an internal wiring harness that was simply... not plugged in. Upped the unit to 3 stars on account of that. Gets about 2 hours on a charge.
The display is hard to read in any kind of light and after just 8 months of sporadic use the battery now no longer recharges.
Kind of distracting... I just pulled the battery out completely to stop that.Great product other than that one little annoyance.
Very disappointing with respect to reliability. Only used twice before it stopped charging. Triple-checked the battery contacts, but it just stopped charging.
The battery won't hold a charge of more than 15 minutes after just a month o use. I like the clock but this seriously reduced its usefullness.
Easy to use. Easy to see. Not too big or too small. Battery is essential for these. But this needs to be protected from rain/snow if used outdoors.
I like the clock, it works great while plugged in, but I cannot get it to charge. I will try and exchange it at Walmart and see if it has a bad battery.
It also is not suitable for use outdoors or even in recreational type gym. I have though about rigging an external &#34;bullhorn&#34; to the unit but it would be so much better if that were pre-wired...Mine does work with the battery.
If the clock held it's charge it would be great. It worked well when plugged into an outlet. Held charge once for 3 hours. The rest of the times it was minimal; even under a minute after sufficient charging. Battery connections seemed poor, as well.
Answer: no