In Stock. Topcon Equipment, Survey, Test Battery Li-Polymer Battery fits Topcon, Gr-3, Gr-5 7.2V, 4000mAh CS-TOR300SL $188.34 The quality and the performance of the products from Cameron Sino is literally amazing. Good quality is assured as the products are manufactured to a very high standard Choosing the right product to fit and replace your battery can be difficult and for those of you who are not technically inclined it is very difficult. We do recommend that you remove... Add to cart