BT-65Q Li-Ion Battery for Topcon GTS 900 and GPT 9000 Total Station

The batteries worked great. One battery lasted half a day and still had two bars when we finished. The only problem was it wouldn't fit in my charger the way my old ones do. I may need to modify the external plastic ridges so it will slide completely into the charger. I had to charge them by resting the batteries' metal on the charger's prongs and anchoring them there with a rubber band. It worked!

I purchased this battery to run in my Topcon 9000 series robot. It does run the unit. But that's about it. It doesn't last very long at all, probably only lasts about 20% of what the factory batteries would last. I have worn out batteries that are 8-10 years old that last about as long as this one does brand new. It is inexpensive, but I guess you get what you pay for. So, 1 star for the fact that it does work and I guess, get you out of a bind. And 2 stars for the price. But, all around, I'm not happy with this product. I am very happy with Tiger Supplies for their fast turn around, though!

I use the batter in. TopCon total station that is no longer supported. The factory website doesn't list the battery any more so I'm thankful Tiger Supply still had it.

This was an absolute disaster you sent me a battery that didn't fit into the charger made me return it and now I'm waiting for someone to get ahold of me so I can get the battery already paid for

The delivery was quick and the price was right. However, the box that batteries came in matched the advertised description but the actual batteries are labeled differently. The batteries fit correctly in my instrument and they work but the sticker on the side of the battery states that they are only 2500mah and the description states 5000mah +/-. I have yet to fully test the life of these batteries to determine if they really are smaller or simply mislabeled.