Instruction: Answer the given question using the supporting document.

Input:
Question: Can I charge 10440 batteries with this charger?
Document: I am very satisfied with the charger and batteries. The batteries charge quickly. the charger works with AA batteries, also,
Battery charger is good enough,  and the batteries so far hold the charge, but it's just a little bulkier that what I though!
This a very convenient charger. It apparently shuts off when the batteries reach a full charge. I didn't give it five stars because the plug is very lose and it falls out of the outlet sometimes.Other than that, it's a good product.
Batteries came fully charged. Nice and compact charger that can charge either one or two batteries. I like the way the AC plug prongs fold away into the housing when not plugged in. Makes for easy storage and unlikely to get accidently damaged.
I like the batteries but I cooked them by overcharging them with the charger. It wasn't clear whether the charger had overcharge protection based on the operators manual and I tried to limit the charge time. I forgot them one time and they charged overnight. Batteries will no longer hold a charge.
Left a battery in the charger overnight and the battery isn't any good any more. I'm not sure why I really expected it to have that feature, probably because it's standard on all other chargers I've ever dealt with. If you're willing to watch the charger while it charges the battery, then you'd be alright with it.Pros:- Batteries are goodCons:- Charger fell apart- Charger has no over charge protection
I wanted to make sure they were at an equal charge level before I charged them. This is to avoid over-charging one of the batteries. It only exhibited signs of malfunction after the flashlight had been on for a minute or two. It also heated up very suddenly, which is why I didn't notice it sooner.If you do buy these batteries and charger, monitor them closely during the first charge and use cycle.
I purchased 2 other sets of 2 batteries and a charger just like this one..  Only, the one I kept for myself had one battery that just would not take a charge. Only thing is, charger must have BOTH batteries in it before it would work so I have to keep the dead battery in the charger so I can charge my one good one.
I am very happy with this purchase. The charger has a single LED to indicate charging. red/green. Plug folds into body for storage. So far it fully charges in 2 hours. No overheating or contact problems. I'm not sure if you can charge a single battery at a time as there are no instructions, but apparently you can. Batteries are exactly as described and have been perfect so far.
After having run this battery through a few cycles in a flashlight (5-10), I thought that the capacity was a little lacking, so I hooked it up to my hobby-grade charger (used to charge, test, & maintain RC helicopter batteries). I fully charged it, and then ran a controlled discharge from 4.2v->3.0v at 0.5a.
Answer: I think you need this charger:  Trustfire Multifunctional Universal Lithium Ion Rechargeable Battery Charger for CR123A, 16340, 14500, 10400,... because it can accommodate both of the batteries you mentioned. It is $9.98 from Amazon... No I don't work there... See: http://www.amazon.com/s/ref=nb_sb_ss_i_2_5?url=search-alias%3Delectronics&field-keywords;=10440%20battery%20and%20charger&sprefix;=10440%2Celectronics%2C322   Cut and past this in your address box to get to the charger...