My design uses a Li-Po battery with the following specs:
capacity: 1000mAh
maximum discharge current: 15C=15000mA
Internal resistance (cell+cables): <80mOhm
voltage: 3.7V
Should be necessary the low esr capacitors next to HL, to compensate the drops on the power supply, during the bursts? If yes, it only makes sense use capacitors with equivalent ESR lower than 80mOhm!
I use a lot of LiPoly/ion batteries for my devices.
If you have shortly connection lines betwen module and input point of battery, you may not install a low esr caps, just set 6.8-10uf ceramics for uhf-gprs filtering.
But i just recommend put qeramics or tantalium caps near the module obove 3-5mm near of PBAT_ pins
In all apps what i use i just set a 477(470uf)/10V tantalium caps, it is little bigger than 107(100uf)/10v, but they have good charge using .